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Finding the Fourth Proportional to 69,149.56, 95,418.50 and 38,934.10

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Solution

The fourth proportional to 69,149.56, 95,418.50 and 38,934.10 is: 53,724.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,149.56 : 95,418.50 = 38,934.10 : x
  2. Step 2: Convert to fraction form
    69,149.56/95,418.50 = 38,934.10/x
  3. Step 3: Cross multiply
    69,149.56x = 95,418.50 × 38,934.10
  4. Step 4: Simplify right side
    69,149.56x = 3,715,033,420.85
  5. Step 5: Solve for x
    x = 3,715,033,420.85/69,149.56
  6. Step 6: Final answer
    x = 53,724.61

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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.