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Finding the Fourth Proportional to 87,395.50, 120,605.93 and 49,669.75

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Solution

The fourth proportional to 87,395.50, 120,605.93 and 49,669.75 is: 68,544.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,395.50 : 120,605.93 = 49,669.75 : x
  2. Step 2: Convert to fraction form
    87,395.50/120,605.93 = 49,669.75/x
  3. Step 3: Cross multiply
    87,395.50x = 120,605.93 × 49,669.75
  4. Step 4: Simplify right side
    87,395.50x = 5,990,466,391.62
  5. Step 5: Solve for x
    x = 5,990,466,391.62/87,395.50
  6. Step 6: Final answer
    x = 68,544.33

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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.