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Finding the Fourth Proportional to 60,700.54, 83,780.16 and 39,442.90

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Solution

The fourth proportional to 60,700.54, 83,780.16 and 39,442.90 is: 54,439.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,700.54 : 83,780.16 = 39,442.90 : x
  2. Step 2: Convert to fraction form
    60,700.54/83,780.16 = 39,442.90/x
  3. Step 3: Cross multiply
    60,700.54x = 83,780.16 × 39,442.90
  4. Step 4: Simplify right side
    60,700.54x = 3,304,532,472.86
  5. Step 5: Solve for x
    x = 3,304,532,472.86/60,700.54
  6. Step 6: Final answer
    x = 54,439.92

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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.