Home / 87,481.13-120,734.58-49,255.00

Finding the Fourth Proportional to 87,481.13, 120,734.58 and 49,255.00

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Solution

The fourth proportional to 87,481.13, 120,734.58 and 49,255.00 is: 67,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,481.13 : 120,734.58 = 49,255.00 : x
  2. Step 2: Convert to fraction form
    87,481.13/120,734.58 = 49,255.00/x
  3. Step 3: Cross multiply
    87,481.13x = 120,734.58 × 49,255.00
  4. Step 4: Simplify right side
    87,481.13x = 5,946,781,620.77
  5. Step 5: Solve for x
    x = 5,946,781,620.77/87,481.13
  6. Step 6: Final answer
    x = 67,977.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.