Home / 87,620.70-131,431.05-43,255.90

Finding the Fourth Proportional to 87,620.70, 131,431.05 and 43,255.90

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Solution

The fourth proportional to 87,620.70, 131,431.05 and 43,255.90 is: 64,883.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,620.70 : 131,431.05 = 43,255.90 : x
  2. Step 2: Convert to fraction form
    87,620.70/131,431.05 = 43,255.90/x
  3. Step 3: Cross multiply
    87,620.70x = 131,431.05 × 43,255.90
  4. Step 4: Simplify right side
    87,620.70x = 5,685,168,355.70
  5. Step 5: Solve for x
    x = 5,685,168,355.70/87,620.70
  6. Step 6: Final answer
    x = 64,883.85

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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.