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Finding the Fourth Proportional to 68,475.80, 102,713.70 and 38,951.30

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Solution

The fourth proportional to 68,475.80, 102,713.70 and 38,951.30 is: 58,426.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,475.80 : 102,713.70 = 38,951.30 : x
  2. Step 2: Convert to fraction form
    68,475.80/102,713.70 = 38,951.30/x
  3. Step 3: Cross multiply
    68,475.80x = 102,713.70 × 38,951.30
  4. Step 4: Simplify right side
    68,475.80x = 4,000,832,142.81
  5. Step 5: Solve for x
    x = 4,000,832,142.81/68,475.80
  6. Step 6: Final answer
    x = 58,426.95

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1.5x scale

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.