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Finding the Fourth Proportional to 69,340.88, 95,690.42 and 39,132.60

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Solution

The fourth proportional to 69,340.88, 95,690.42 and 39,132.60 is: 54,002.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,340.88 : 95,690.42 = 39,132.60 : x
  2. Step 2: Convert to fraction form
    69,340.88/95,690.42 = 39,132.60/x
  3. Step 3: Cross multiply
    69,340.88x = 95,690.42 × 39,132.60
  4. Step 4: Simplify right side
    69,340.88x = 3,744,614,929.69
  5. Step 5: Solve for x
    x = 3,744,614,929.69/69,340.88
  6. Step 6: Final answer
    x = 54,002.99

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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.