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Finding the Fourth Proportional to 83,115.90, 124,752.15 and 43,701.30

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Solution

The fourth proportional to 83,115.90, 124,752.15 and 43,701.30 is: 65,593.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,115.90 : 124,752.15 = 43,701.30 : x
  2. Step 2: Convert to fraction form
    83,115.90/124,752.15 = 43,701.30/x
  3. Step 3: Cross multiply
    83,115.90x = 124,752.15 × 43,701.30
  4. Step 4: Simplify right side
    83,115.90x = 5,451,831,132.80
  5. Step 5: Solve for x
    x = 5,451,831,132.80/83,115.90
  6. Step 6: Final answer
    x = 65,593.12

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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.