Finding the Fourth Proportional to 81,213.17, 121,737.98 and 33,854.49
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Solution
The fourth proportional to 81,213.17, 121,737.98 and 33,854.49 is: 50,747.65
Step by Step Solution
- Step 1: Write the proportion equation
81,213.17 : 121,737.98 = 33,854.49 : x - Step 2: Convert to fraction form
81,213.17/121,737.98 = 33,854.49/x - Step 3: Cross multiply
81,213.17x = 121,737.98 × 33,854.49 - Step 4: Simplify right side
81,213.17x = 4,121,377,226.53 - Step 5: Solve for x
x = 4,121,377,226.53/81,213.17 - Step 6: Final answer
x = 50,747.65
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1.5x scale
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.