Finding the Fourth Proportional to 86.71, 129.99 and 46.08
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Solution
The fourth proportional to 86.71, 129.99 and 46.08 is: 69.08
Step by Step Solution
- Step 1: Write the proportion equation
86.71 : 129.99 = 46.08 : x - Step 2: Convert to fraction form
86.71/129.99 = 46.08/x - Step 3: Cross multiply
86.71x = 129.99 × 46.08 - Step 4: Simplify right side
86.71x = 5,989.94 - Step 5: Solve for x
x = 5,989.94/86.71 - Step 6: Final answer
x = 69.08
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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.