Question

36 is 72% of what number?

Answer 1

We set up a proportion: 36/?= 72/100

Cross multiply: 72*?= 36*100
⇒ ?= 36*100/72= 50

36 is 72% of 50.

Answer 2

To set this up, you would do...

36=.72x, having x be your unknown number. Then, divide each side by .72 to get the variable by itself.

36/.72=x

Simplify: 50=x

Your answer is 50. Hope that helped!!! :)