What is 5/8 of 92?
Often, in mathematics or everyday life, we need to find a fraction of a given number. For instance, how would you quickly calculate 5/8 of 92? We'll show you a straightforward method to achieve that.
How to calculate 5/8 of 92?
- Multiply the whole number by the numerator of the fraction: 92 × 5 = 460
- Divide this result by denominator of the fraction: 460/8 = 57.5
- Simplify by dividing both the numerator and denominator by their GCD (4):
- 460/4 = 115
- 8/4 = 2
- Which gives: 115/2
Since 115/2 is an improper fraction, the result could also be expressed as a mixed number: 57 1/2
How does it work?
The principle behind finding a fraction of a number, such as 5/8 of 92, is rooted in the method of cross-multiplication.
Consider the following proportion: (where x represents 5/8 of 92)
- Using the cross-multiplication method, multiply both numerators by their opposite denominators:
- Which gives:
- Divide both sides by 8 to isolate x:
- Which gives the result: (or )
Thus, 5/8 of 92 is equal to 115/2 (or 57.5 in its decimal form).