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Finding the Fourth Proportional to 50,753.28, 76,129.50 and 39,669.29

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Solution

The fourth proportional to 50,753.28, 76,129.50 and 39,669.29 is: 59,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,753.28 : 76,129.50 = 39,669.29 : x
  2. Step 2: Convert to fraction form
    50,753.28/76,129.50 = 39,669.29/x
  3. Step 3: Cross multiply
    50,753.28x = 76,129.50 × 39,669.29
  4. Step 4: Simplify right side
    50,753.28x = 3,020,002,832.41
  5. Step 5: Solve for x
    x = 3,020,002,832.41/50,753.28
  6. Step 6: Final answer
    x = 59,503.60

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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.