What is 8/4 of 50?

Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 8/4 of 50? We'll show you a straightforward method to achieve that.

How to calculate 8/4 of 50?

  1. Multiply the whole number by the numerator of the fraction: 50 × 8 = 400
  2. Divide this result by denominator of the fraction: 400/4 = 100
  3. Simplify by dividing both the numerator and denominator by their GCD (4):
    • 400/4 = 100
    • 4/4 = 1
  4. Which gives: 100/1

How does it work?

The principle behind finding a fraction of a number, such as 8/4 of 50, is rooted in the method of cross-multiplication.

Consider the following proportion: 8 4 = x 50 (where x represents 8/4 of 50)

  1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: 8 × 50 = 4 x
  2. Which gives: 400 = 4 x
  3. Divide both sides by 4 to isolate x: 400 4 = 4 x 4
  4. Which gives the result: 400 4 = x (or 100 1 = x )

Thus, 8/4 of 50 is equal to 100/1 (or 100 in its decimal form).