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Finding the Fourth Proportional to 83,114.90, 124,750.65 and 43,700.30

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Solution

The fourth proportional to 83,114.90, 124,750.65 and 43,700.30 is: 65,591.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,114.90 : 124,750.65 = 43,700.30 : x
  2. Step 2: Convert to fraction form
    83,114.90/124,750.65 = 43,700.30/x
  3. Step 3: Cross multiply
    83,114.90x = 124,750.65 × 43,700.30
  4. Step 4: Simplify right side
    83,114.90x = 5,451,640,830.20
  5. Step 5: Solve for x
    x = 5,451,640,830.20/83,114.90
  6. Step 6: Final answer
    x = 65,591.62

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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.