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Finding the Fourth Proportional to 87,593.76, 120,879.52 and 49,868

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Solution

The fourth proportional to 87,593.76, 120,879.52 and 49,868 is: 68,817.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,593.76 : 120,879.52 = 49,868 : x
  2. Step 2: Convert to fraction form
    87,593.76/120,879.52 = 49,868/x
  3. Step 3: Cross multiply
    87,593.76x = 120,879.52 × 49,868
  4. Step 4: Simplify right side
    87,593.76x = 6,028,019,903.36
  5. Step 5: Solve for x
    x = 6,028,019,903.36/87,593.76
  6. Step 6: Final answer
    x = 68,817.91

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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.