Home / 87,209.90-120,350.49-49,481.18

Finding the Fourth Proportional to 87,209.90, 120,350.49 and 49,481.18

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Solution

The fourth proportional to 87,209.90, 120,350.49 and 49,481.18 is: 68,284.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,209.90 : 120,350.49 = 49,481.18 : x
  2. Step 2: Convert to fraction form
    87,209.90/120,350.49 = 49,481.18/x
  3. Step 3: Cross multiply
    87,209.90x = 120,350.49 × 49,481.18
  4. Step 4: Simplify right side
    87,209.90x = 5,955,084,374.10
  5. Step 5: Solve for x
    x = 5,955,084,374.10/87,209.90
  6. Step 6: Final answer
    x = 68,284.50

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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.