Home / 71,882.20-107,691.84-52,111.72

Finding the Fourth Proportional to 71,882.20, 107,691.84 and 52,111.72

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Solution

The fourth proportional to 71,882.20, 107,691.84 and 52,111.72 is: 78,072.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,882.20 : 107,691.84 = 52,111.72 : x
  2. Step 2: Convert to fraction form
    71,882.20/107,691.84 = 52,111.72/x
  3. Step 3: Cross multiply
    71,882.20x = 107,691.84 × 52,111.72
  4. Step 4: Simplify right side
    71,882.20x = 5,612,007,012.36
  5. Step 5: Solve for x
    x = 5,612,007,012.36/71,882.20
  6. Step 6: Final answer
    x = 78,072.28

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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.