Finding the Fourth Proportional to 81,256.62, 121,869.99 and 36,872.70
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Solution
The fourth proportional to 81,256.62, 121,869.99 and 36,872.70 is: 55,302.27
Step by Step Solution
- Step 1: Write the proportion equation
81,256.62 : 121,869.99 = 36,872.70 : x - Step 2: Convert to fraction form
81,256.62/121,869.99 = 36,872.70/x - Step 3: Cross multiply
81,256.62x = 121,869.99 × 36,872.70 - Step 4: Simplify right side
81,256.62x = 4,493,675,580.27 - Step 5: Solve for x
x = 4,493,675,580.27/81,256.62 - Step 6: Final answer
x = 55,302.27
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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.