Finding the Fourth Proportional to 72.64, 108.87 and 32.02
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Solution
The fourth proportional to 72.64, 108.87 and 32.02 is: 47.99
Step by Step Solution
- Step 1: Write the proportion equation
72.64 : 108.87 = 32.02 : x - Step 2: Convert to fraction form
72.64/108.87 = 32.02/x - Step 3: Cross multiply
72.64x = 108.87 × 32.02 - Step 4: Simplify right side
72.64x = 3,485.87 - Step 5: Solve for x
x = 3,485.87/72.64 - Step 6: Final answer
x = 47.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.