Home / 87,581.80-131,178.30-72,029.80

Finding the Fourth Proportional to 87,581.80, 131,178.30 and 72,029.80

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Solution

The fourth proportional to 87,581.80, 131,178.30 and 72,029.80 is: 107,884.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,581.80 : 131,178.30 = 72,029.80 : x
  2. Step 2: Convert to fraction form
    87,581.80/131,178.30 = 72,029.80/x
  3. Step 3: Cross multiply
    87,581.80x = 131,178.30 × 72,029.80
  4. Step 4: Simplify right side
    87,581.80x = 9,448,746,713.34
  5. Step 5: Solve for x
    x = 9,448,746,713.34/87,581.80
  6. Step 6: Final answer
    x = 107,884.82

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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.