What is 4/6 of 64?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 4/6 of 64? We'll show you a straightforward method to achieve that.

How to calculate 4/6 of 64?

  1. Multiply the whole number by the numerator of the fraction: 64 × 4 = 256
  2. Divide this result by denominator of the fraction: 256/6 = 42.666666666667
  3. Simplify by dividing both the numerator and denominator by their GCD (2):
    • 256/2 = 128
    • 6/2 = 3
  4. Which gives: 128/3

Since 128/3 is an improper fraction, the result could also be expressed as a mixed number: 42 2/3

How does it work?

The principle behind finding a fraction of a number, such as 4/6 of 64, is rooted in the method of cross-multiplication.

Consider the following proportion: 4 6 = x 64 (where x represents 4/6 of 64)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 4 × 64 = 6 x
  2. Which gives: 256 = 6 x
  3. Divide both sides by 6 to isolate x: 256 6 = 6 x 6
  4. Which gives the result: 256 6 = x (or 128 3 = x )

Thus, 4/6 of 64 is equal to 128/3 (or 42.666666666667 in its decimal form).