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Finding the Fourth Proportional to 75,115.72, 103,658.82 and 41,123.80

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Solution

The fourth proportional to 75,115.72, 103,658.82 and 41,123.80 is: 56,750.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,115.72 : 103,658.82 = 41,123.80 : x
  2. Step 2: Convert to fraction form
    75,115.72/103,658.82 = 41,123.80/x
  3. Step 3: Cross multiply
    75,115.72x = 103,658.82 × 41,123.80
  4. Step 4: Simplify right side
    75,115.72x = 4,262,844,581.92
  5. Step 5: Solve for x
    x = 4,262,844,581.92/75,115.72
  6. Step 6: Final answer
    x = 56,750.37

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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.