Finding the Fourth Proportional to 71,062.43, 106,575.08 and 21,129.08
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Solution
The fourth proportional to 71,062.43, 106,575.08 and 21,129.08 is: 31,688.09
Step by Step Solution
- Step 1: Write the proportion equation
71,062.43 : 106,575.08 = 21,129.08 : x - Step 2: Convert to fraction form
71,062.43/106,575.08 = 21,129.08/x - Step 3: Cross multiply
71,062.43x = 106,575.08 × 21,129.08 - Step 4: Simplify right side
71,062.43x = 2,251,832,752.81 - Step 5: Solve for x
x = 2,251,832,752.81/71,062.43 - Step 6: Final answer
x = 31,688.09
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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.