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Finding the Fourth Proportional to 83,751.40, 125,627.10 and 72,346.60

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Solution

The fourth proportional to 83,751.40, 125,627.10 and 72,346.60 is: 108,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,751.40 : 125,627.10 = 72,346.60 : x
  2. Step 2: Convert to fraction form
    83,751.40/125,627.10 = 72,346.60/x
  3. Step 3: Cross multiply
    83,751.40x = 125,627.10 × 72,346.60
  4. Step 4: Simplify right side
    83,751.40x = 9,088,693,552.86
  5. Step 5: Solve for x
    x = 9,088,693,552.86/83,751.40
  6. Step 6: Final answer
    x = 108,519.90

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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.