Home / 87,172.92-130,780.08-47,231.82

Finding the Fourth Proportional to 87,172.92, 130,780.08 and 47,231.82

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Solution

The fourth proportional to 87,172.92, 130,780.08 and 47,231.82 is: 70,858.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,172.92 : 130,780.08 = 47,231.82 : x
  2. Step 2: Convert to fraction form
    87,172.92/130,780.08 = 47,231.82/x
  3. Step 3: Cross multiply
    87,172.92x = 130,780.08 × 47,231.82
  4. Step 4: Simplify right side
    87,172.92x = 6,176,981,198.15
  5. Step 5: Solve for x
    x = 6,176,981,198.15/87,172.92
  6. Step 6: Final answer
    x = 70,858.95

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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.