Finding the Fourth Proportional to 100,406.24, 138,503.04 and 62,614.88
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Solution
The fourth proportional to 100,406.24, 138,503.04 and 62,614.88 is: 86,372.63
Step by Step Solution
- Step 1: Write the proportion equation
100,406.24 : 138,503.04 = 62,614.88 : x - Step 2: Convert to fraction form
100,406.24/138,503.04 = 62,614.88/x - Step 3: Cross multiply
100,406.24x = 138,503.04 × 62,614.88 - Step 4: Simplify right side
100,406.24x = 8,672,351,229.24 - Step 5: Solve for x
x = 8,672,351,229.24/100,406.24 - Step 6: Final answer
x = 86,372.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.