Finding the Fourth Proportional to 81,136.92, 121,716.90 and 24,981.70
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Solution
The fourth proportional to 81,136.92, 121,716.90 and 24,981.70 is: 37,476.09
Step by Step Solution
- Step 1: Write the proportion equation
81,136.92 : 121,716.90 = 24,981.70 : x - Step 2: Convert to fraction form
81,136.92/121,716.90 = 24,981.70/x - Step 3: Cross multiply
81,136.92x = 121,716.90 × 24,981.70 - Step 4: Simplify right side
81,136.92x = 3,040,694,501.38 - Step 5: Solve for x
x = 3,040,694,501.38/81,136.92 - Step 6: Final answer
x = 37,476.09
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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.