Home / 87,646.72-120,949.92-49,408.56

Finding the Fourth Proportional to 87,646.72, 120,949.92 and 49,408.56

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Solution

The fourth proportional to 87,646.72, 120,949.92 and 49,408.56 is: 68,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,646.72 : 120,949.92 = 49,408.56 : x
  2. Step 2: Convert to fraction form
    87,646.72/120,949.92 = 49,408.56/x
  3. Step 3: Cross multiply
    87,646.72x = 120,949.92 × 49,408.56
  4. Step 4: Simplify right side
    87,646.72x = 5,975,961,379.32
  5. Step 5: Solve for x
    x = 5,975,961,379.32/87,646.72
  6. Step 6: Final answer
    x = 68,182.37

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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.