Home / 87,471.61-120,711.33-49,231.91

Finding the Fourth Proportional to 87,471.61, 120,711.33 and 49,231.91

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Solution

The fourth proportional to 87,471.61, 120,711.33 and 49,231.91 is: 67,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,471.61 : 120,711.33 = 49,231.91 : x
  2. Step 2: Convert to fraction form
    87,471.61/120,711.33 = 49,231.91/x
  3. Step 3: Cross multiply
    87,471.61x = 120,711.33 × 49,231.91
  4. Step 4: Simplify right side
    87,471.61x = 5,942,849,636.32
  5. Step 5: Solve for x
    x = 5,942,849,636.32/87,471.61
  6. Step 6: Final answer
    x = 67,940.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.