Home / 87,711.12-131,608.80-68,873.76

Finding the Fourth Proportional to 87,711.12, 131,608.80 and 68,873.76

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Solution

The fourth proportional to 87,711.12, 131,608.80 and 68,873.76 is: 103,343.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.12 : 131,608.80 = 68,873.76 : x
  2. Step 2: Convert to fraction form
    87,711.12/131,608.80 = 68,873.76/x
  3. Step 3: Cross multiply
    87,711.12x = 131,608.80 × 68,873.76
  4. Step 4: Simplify right side
    87,711.12x = 9,064,392,905.09
  5. Step 5: Solve for x
    x = 9,064,392,905.09/87,711.12
  6. Step 6: Final answer
    x = 103,343.71

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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.