Finding the Fourth Proportional to 87,472.13, 120,726.11 and 66,214.49
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Solution
The fourth proportional to 87,472.13, 120,726.11 and 66,214.49 is: 91,387.03
Step by Step Solution
- Step 1: Write the proportion equation
87,472.13 : 120,726.11 = 66,214.49 : x - Step 2: Convert to fraction form
87,472.13/120,726.11 = 66,214.49/x - Step 3: Cross multiply
87,472.13x = 120,726.11 × 66,214.49 - Step 4: Simplify right side
87,472.13x = 7,993,817,365.24 - Step 5: Solve for x
x = 7,993,817,365.24/87,472.13 - Step 6: Final answer
x = 91,387.03
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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.