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Finding the Fourth Proportional to 69,179.82, 103,769.76 and 53,407.89

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Solution

The fourth proportional to 69,179.82, 103,769.76 and 53,407.89 is: 80,111.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,179.82 : 103,769.76 = 53,407.89 : x
  2. Step 2: Convert to fraction form
    69,179.82/103,769.76 = 53,407.89/x
  3. Step 3: Cross multiply
    69,179.82x = 103,769.76 × 53,407.89
  4. Step 4: Simplify right side
    69,179.82x = 5,542,123,408.56
  5. Step 5: Solve for x
    x = 5,542,123,408.56/69,179.82
  6. Step 6: Final answer
    x = 80,111.85

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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.