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Finding the Fourth Proportional to 39,839.20, 59,791.20 and 38,543.20

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Solution

The fourth proportional to 39,839.20, 59,791.20 and 38,543.20 is: 57,846.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,839.20 : 59,791.20 = 38,543.20 : x
  2. Step 2: Convert to fraction form
    39,839.20/59,791.20 = 38,543.20/x
  3. Step 3: Cross multiply
    39,839.20x = 59,791.20 × 38,543.20
  4. Step 4: Simplify right side
    39,839.20x = 2,304,544,179.84
  5. Step 5: Solve for x
    x = 2,304,544,179.84/39,839.20
  6. Step 6: Final answer
    x = 57,846.15

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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.