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Finding the Fourth Proportional to 75,651.52, 104,404.65 and 54,143.29

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Solution

The fourth proportional to 75,651.52, 104,404.65 and 54,143.29 is: 74,721.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,651.52 : 104,404.65 = 54,143.29 : x
  2. Step 2: Convert to fraction form
    75,651.52/104,404.65 = 54,143.29/x
  3. Step 3: Cross multiply
    75,651.52x = 104,404.65 × 54,143.29
  4. Step 4: Simplify right side
    75,651.52x = 5,652,810,582.49
  5. Step 5: Solve for x
    x = 5,652,810,582.49/75,651.52
  6. Step 6: Final answer
    x = 74,721.71

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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.