Finding the Fourth Proportional to 87,721.44, 120,979.08 and 62,177.28
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Solution
The fourth proportional to 87,721.44, 120,979.08 and 62,177.28 is: 85,750.42
Step by Step Solution
- Step 1: Write the proportion equation
87,721.44 : 120,979.08 = 62,177.28 : x - Step 2: Convert to fraction form
87,721.44/120,979.08 = 62,177.28/x - Step 3: Cross multiply
87,721.44x = 120,979.08 × 62,177.28 - Step 4: Simplify right side
87,721.44x = 7,522,150,131.30 - Step 5: Solve for x
x = 7,522,150,131.30/87,721.44 - Step 6: Final answer
x = 85,750.42
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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.