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Finding the Fourth Proportional to 84,761.67, 127,149.56 and 42,620.07

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Solution

The fourth proportional to 84,761.67, 127,149.56 and 42,620.07 is: 63,933.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,761.67 : 127,149.56 = 42,620.07 : x
  2. Step 2: Convert to fraction form
    84,761.67/127,149.56 = 42,620.07/x
  3. Step 3: Cross multiply
    84,761.67x = 127,149.56 × 42,620.07
  4. Step 4: Simplify right side
    84,761.67x = 5,419,122,934.57
  5. Step 5: Solve for x
    x = 5,419,122,934.57/84,761.67
  6. Step 6: Final answer
    x = 63,933.65

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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.