Home / 87,708.60-131,433.30-74,489.40

Finding the Fourth Proportional to 87,708.60, 131,433.30 and 74,489.40

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Solution

The fourth proportional to 87,708.60, 131,433.30 and 74,489.40 is: 111,624.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,708.60 : 131,433.30 = 74,489.40 : x
  2. Step 2: Convert to fraction form
    87,708.60/131,433.30 = 74,489.40/x
  3. Step 3: Cross multiply
    87,708.60x = 131,433.30 × 74,489.40
  4. Step 4: Simplify right side
    87,708.60x = 9,790,387,657.02
  5. Step 5: Solve for x
    x = 9,790,387,657.02/87,708.60
  6. Step 6: Final answer
    x = 111,624.03

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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.