Finding the Fourth Proportional to 86,542.68, 129,872.01 and 30,382.96
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Solution
The fourth proportional to 86,542.68, 129,872.01 and 30,382.96 is: 45,594.80
Step by Step Solution
- Step 1: Write the proportion equation
86,542.68 : 129,872.01 = 30,382.96 : x - Step 2: Convert to fraction form
86,542.68/129,872.01 = 30,382.96/x - Step 3: Cross multiply
86,542.68x = 129,872.01 × 30,382.96 - Step 4: Simplify right side
86,542.68x = 3,945,896,084.95 - Step 5: Solve for x
x = 3,945,896,084.95/86,542.68 - Step 6: Final answer
x = 45,594.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.