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Finding the Fourth Proportional to 87,593.86, 120,880.38 and 49,870.54

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Solution

The fourth proportional to 87,593.86, 120,880.38 and 49,870.54 is: 68,821.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,593.86 : 120,880.38 = 49,870.54 : x
  2. Step 2: Convert to fraction form
    87,593.86/120,880.38 = 49,870.54/x
  3. Step 3: Cross multiply
    87,593.86x = 120,880.38 × 49,870.54
  4. Step 4: Simplify right side
    87,593.86x = 6,028,369,826.01
  5. Step 5: Solve for x
    x = 6,028,369,826.01/87,593.86
  6. Step 6: Final answer
    x = 68,821.83

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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.