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Finding the Fourth Proportional to 76,868, 115,170.77 and 41,744.78

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Solution

The fourth proportional to 76,868, 115,170.77 and 41,744.78 is: 62,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,868 : 115,170.77 = 41,744.78 : x
  2. Step 2: Convert to fraction form
    76,868/115,170.77 = 41,744.78/x
  3. Step 3: Cross multiply
    76,868x = 115,170.77 × 41,744.78
  4. Step 4: Simplify right side
    76,868x = 4,807,778,456.08
  5. Step 5: Solve for x
    x = 4,807,778,456.08/76,868
  6. Step 6: Final answer
    x = 62,545.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.