Home / 87,705.10-131,579.25-25,381.90

Finding the Fourth Proportional to 87,705.10, 131,579.25 and 25,381.90

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Solution

The fourth proportional to 87,705.10, 131,579.25 and 25,381.90 is: 38,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,705.10 : 131,579.25 = 25,381.90 : x
  2. Step 2: Convert to fraction form
    87,705.10/131,579.25 = 25,381.90/x
  3. Step 3: Cross multiply
    87,705.10x = 131,579.25 × 25,381.90
  4. Step 4: Simplify right side
    87,705.10x = 3,339,731,365.58
  5. Step 5: Solve for x
    x = 3,339,731,365.58/87,705.10
  6. Step 6: Final answer
    x = 38,079.10

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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.