Home / 87,649.85-120,949.54-49,418.79

Finding the Fourth Proportional to 87,649.85, 120,949.54 and 49,418.79

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Solution

The fourth proportional to 87,649.85, 120,949.54 and 49,418.79 is: 68,193.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,649.85 : 120,949.54 = 49,418.79 : x
  2. Step 2: Convert to fraction form
    87,649.85/120,949.54 = 49,418.79/x
  3. Step 3: Cross multiply
    87,649.85x = 120,949.54 × 49,418.79
  4. Step 4: Simplify right side
    87,649.85x = 5,977,179,066.01
  5. Step 5: Solve for x
    x = 5,977,179,066.01/87,649.85
  6. Step 6: Final answer
    x = 68,193.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.