Home / 87,961.49-131,942.33-21,401.61

Finding the Fourth Proportional to 87,961.49, 131,942.33 and 21,401.61

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Solution

The fourth proportional to 87,961.49, 131,942.33 and 21,401.61 is: 32,102.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,961.49 : 131,942.33 = 21,401.61 : x
  2. Step 2: Convert to fraction form
    87,961.49/131,942.33 = 21,401.61/x
  3. Step 3: Cross multiply
    87,961.49x = 131,942.33 × 21,401.61
  4. Step 4: Simplify right side
    87,961.49x = 2,823,778,182.14
  5. Step 5: Solve for x
    x = 2,823,778,182.14/87,961.49
  6. Step 6: Final answer
    x = 32,102.44

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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.