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Finding the Fourth Proportional to 77,229.78, 115,861.65 and 43,965.42

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Solution

The fourth proportional to 77,229.78, 115,861.65 and 43,965.42 is: 65,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,229.78 : 115,861.65 = 43,965.42 : x
  2. Step 2: Convert to fraction form
    77,229.78/115,861.65 = 43,965.42/x
  3. Step 3: Cross multiply
    77,229.78x = 115,861.65 × 43,965.42
  4. Step 4: Simplify right side
    77,229.78x = 5,093,906,104.14
  5. Step 5: Solve for x
    x = 5,093,906,104.14/77,229.78
  6. Step 6: Final answer
    x = 65,957.80

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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.