Home / 87,705.20-131,493-72,853.04

Finding the Fourth Proportional to 87,705.20, 131,493 and 72,853.04

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Solution

The fourth proportional to 87,705.20, 131,493 and 72,853.04 is: 109,225.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,705.20 : 131,493 = 72,853.04 : x
  2. Step 2: Convert to fraction form
    87,705.20/131,493 = 72,853.04/x
  3. Step 3: Cross multiply
    87,705.20x = 131,493 × 72,853.04
  4. Step 4: Simplify right side
    87,705.20x = 9,579,664,788.72
  5. Step 5: Solve for x
    x = 9,579,664,788.72/87,705.20
  6. Step 6: Final answer
    x = 109,225.73

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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.