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Finding the Fourth Proportional to 83,410.92, 125,241.21 and 72,201.02

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Solution

The fourth proportional to 83,410.92, 125,241.21 and 72,201.02 is: 108,409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,410.92 : 125,241.21 = 72,201.02 : x
  2. Step 2: Convert to fraction form
    83,410.92/125,241.21 = 72,201.02/x
  3. Step 3: Cross multiply
    83,410.92x = 125,241.21 × 72,201.02
  4. Step 4: Simplify right side
    83,410.92x = 9,042,542,481.83
  5. Step 5: Solve for x
    x = 9,042,542,481.83/83,410.92
  6. Step 6: Final answer
    x = 108,409.58

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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.