Home / 87,516.60-131,433.30-76,630.20

Finding the Fourth Proportional to 87,516.60, 131,433.30 and 76,630.20

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Solution

The fourth proportional to 87,516.60, 131,433.30 and 76,630.20 is: 115,084.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,516.60 : 131,433.30 = 76,630.20 : x
  2. Step 2: Convert to fraction form
    87,516.60/131,433.30 = 76,630.20/x
  3. Step 3: Cross multiply
    87,516.60x = 131,433.30 × 76,630.20
  4. Step 4: Simplify right side
    87,516.60x = 10,071,760,065.66
  5. Step 5: Solve for x
    x = 10,071,760,065.66/87,516.60
  6. Step 6: Final answer
    x = 115,084.00

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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.