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Finding the Fourth Proportional to 69,335.80, 103,909.47 and 29,321.53

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Solution

The fourth proportional to 69,335.80, 103,909.47 and 29,321.53 is: 43,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,335.80 : 103,909.47 = 29,321.53 : x
  2. Step 2: Convert to fraction form
    69,335.80/103,909.47 = 29,321.53/x
  3. Step 3: Cross multiply
    69,335.80x = 103,909.47 × 29,321.53
  4. Step 4: Simplify right side
    69,335.80x = 3,046,784,641.89
  5. Step 5: Solve for x
    x = 3,046,784,641.89/69,335.80
  6. Step 6: Final answer
    x = 43,942.45

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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.