Home / 87,401.70-131,105.30-28,237.91

Finding the Fourth Proportional to 87,401.70, 131,105.30 and 28,237.91

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Solution

The fourth proportional to 87,401.70, 131,105.30 and 28,237.91 is: 42,357.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,401.70 : 131,105.30 = 28,237.91 : x
  2. Step 2: Convert to fraction form
    87,401.70/131,105.30 = 28,237.91/x
  3. Step 3: Cross multiply
    87,401.70x = 131,105.30 × 28,237.91
  4. Step 4: Simplify right side
    87,401.70x = 3,702,138,865.21
  5. Step 5: Solve for x
    x = 3,702,138,865.21/87,401.70
  6. Step 6: Final answer
    x = 42,357.74

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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.