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Finding the Fourth Proportional to 75,306.69, 103,911.66 and 43,469.44

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Solution

The fourth proportional to 75,306.69, 103,911.66 and 43,469.44 is: 59,981.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,306.69 : 103,911.66 = 43,469.44 : x
  2. Step 2: Convert to fraction form
    75,306.69/103,911.66 = 43,469.44/x
  3. Step 3: Cross multiply
    75,306.69x = 103,911.66 × 43,469.44
  4. Step 4: Simplify right side
    75,306.69x = 4,516,981,409.89
  5. Step 5: Solve for x
    x = 4,516,981,409.89/75,306.69
  6. Step 6: Final answer
    x = 59,981.14

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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.