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Finding the Fourth Proportional to 75,279.78, 112,821.24 and 30,854.52

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Solution

The fourth proportional to 75,279.78, 112,821.24 and 30,854.52 is: 46,241.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,279.78 : 112,821.24 = 30,854.52 : x
  2. Step 2: Convert to fraction form
    75,279.78/112,821.24 = 30,854.52/x
  3. Step 3: Cross multiply
    75,279.78x = 112,821.24 × 30,854.52
  4. Step 4: Simplify right side
    75,279.78x = 3,481,045,206.00
  5. Step 5: Solve for x
    x = 3,481,045,206.00/75,279.78
  6. Step 6: Final answer
    x = 46,241.44

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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.