Finding the Fourth Proportional to 81,115.62, 121,717.11 and 33,763.43
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Solution
The fourth proportional to 81,115.62, 121,717.11 and 33,763.43 is: 50,663.32
Step by Step Solution
- Step 1: Write the proportion equation
81,115.62 : 121,717.11 = 33,763.43 : x - Step 2: Convert to fraction form
81,115.62/121,717.11 = 33,763.43/x - Step 3: Cross multiply
81,115.62x = 121,717.11 × 33,763.43 - Step 4: Simplify right side
81,115.62x = 4,109,586,514.70 - Step 5: Solve for x
x = 4,109,586,514.70/81,115.62 - Step 6: Final answer
x = 50,663.32
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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.