Finding the Fourth Proportional to 81,244.62, 121,869.42 and 22,081.55
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Solution
The fourth proportional to 81,244.62, 121,869.42 and 22,081.55 is: 33,122.99
Step by Step Solution
- Step 1: Write the proportion equation
81,244.62 : 121,869.42 = 22,081.55 : x - Step 2: Convert to fraction form
81,244.62/121,869.42 = 22,081.55/x - Step 3: Cross multiply
81,244.62x = 121,869.42 × 22,081.55 - Step 4: Simplify right side
81,244.62x = 2,691,065,081.85 - Step 5: Solve for x
x = 2,691,065,081.85/81,244.62 - Step 6: Final answer
x = 33,122.99
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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.