Finding the Fourth Proportional to 73,132.09, 109,689.61 and 20,546.08
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Solution
The fourth proportional to 73,132.09, 109,689.61 and 20,546.08 is: 30,816.72
Step by Step Solution
- Step 1: Write the proportion equation
73,132.09 : 109,689.61 = 20,546.08 : x - Step 2: Convert to fraction form
73,132.09/109,689.61 = 20,546.08/x - Step 3: Cross multiply
73,132.09x = 109,689.61 × 20,546.08 - Step 4: Simplify right side
73,132.09x = 2,253,691,502.23 - Step 5: Solve for x
x = 2,253,691,502.23/73,132.09 - Step 6: Final answer
x = 30,816.72
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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.