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Finding the Fourth Proportional to 68,475.80, 102,713.70 and 38,882.20

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Solution

The fourth proportional to 68,475.80, 102,713.70 and 38,882.20 is: 58,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,475.80 : 102,713.70 = 38,882.20 : x
  2. Step 2: Convert to fraction form
    68,475.80/102,713.70 = 38,882.20/x
  3. Step 3: Cross multiply
    68,475.80x = 102,713.70 × 38,882.20
  4. Step 4: Simplify right side
    68,475.80x = 3,993,734,626.14
  5. Step 5: Solve for x
    x = 3,993,734,626.14/68,475.80
  6. Step 6: Final answer
    x = 58,323.30

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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.