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Finding the Fourth Proportional to 69,107.11, 95,375.55 and 38,899.78

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Solution

The fourth proportional to 69,107.11, 95,375.55 and 38,899.78 is: 53,686.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,107.11 : 95,375.55 = 38,899.78 : x
  2. Step 2: Convert to fraction form
    69,107.11/95,375.55 = 38,899.78/x
  3. Step 3: Cross multiply
    69,107.11x = 95,375.55 × 38,899.78
  4. Step 4: Simplify right side
    69,107.11x = 3,710,087,912.38
  5. Step 5: Solve for x
    x = 3,710,087,912.38/69,107.11
  6. Step 6: Final answer
    x = 53,686.05

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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.