Home / 87,965.20-131,947.80-58,440.70

Finding the Fourth Proportional to 87,965.20, 131,947.80 and 58,440.70

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Solution

The fourth proportional to 87,965.20, 131,947.80 and 58,440.70 is: 87,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,965.20 : 131,947.80 = 58,440.70 : x
  2. Step 2: Convert to fraction form
    87,965.20/131,947.80 = 58,440.70/x
  3. Step 3: Cross multiply
    87,965.20x = 131,947.80 × 58,440.70
  4. Step 4: Simplify right side
    87,965.20x = 7,711,121,795.46
  5. Step 5: Solve for x
    x = 7,711,121,795.46/87,965.20
  6. Step 6: Final answer
    x = 87,661.05

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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.