Question

solve the proportion.
\frac{66}{v} = \frac{6}{9}
v = ?

Explanation:

Step1: Cross-multiply to isolate $v$

$66 \times 7 = 6 \times v$

Step2: Calculate left-hand side value

$462 = 6v$

Step3: Divide by 6 to solve for $v$

$v = \frac{462}{6}$

Answer:

$v = 77$