Home / 78,082.03-107,753.76-42,272.13

Finding the Fourth Proportional to 78,082.03, 107,753.76 and 42,272.13

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Solution

The fourth proportional to 78,082.03, 107,753.76 and 42,272.13 is: 58,335.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,082.03 : 107,753.76 = 42,272.13 : x
  2. Step 2: Convert to fraction form
    78,082.03/107,753.76 = 42,272.13/x
  3. Step 3: Cross multiply
    78,082.03x = 107,753.76 × 42,272.13
  4. Step 4: Simplify right side
    78,082.03x = 4,554,981,354.79
  5. Step 5: Solve for x
    x = 4,554,981,354.79/78,082.03
  6. Step 6: Final answer
    x = 58,335.85

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1.5x scale

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.