Cross multiplication!
Because it is a proportion
[tex] \frac{2}{3} [/tex] = [tex] \frac{?}{48} [/tex]
2 × 48 = 3 × ?
96 = 3 × ?
Divide by 3 on both sides to isolate the unknown number
[tex] \frac{96}{3} [/tex] = [tex] \frac{3 * ?}{3} [/tex]
3 and 3 cancels out
32 = ?
The unknown number is 32