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Finding the Fourth Proportional to 73,005, 100,746.72 and 39,471

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Solution

The fourth proportional to 73,005, 100,746.72 and 39,471 is: 54,469.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,005 : 100,746.72 = 39,471 : x
  2. Step 2: Convert to fraction form
    73,005/100,746.72 = 39,471/x
  3. Step 3: Cross multiply
    73,005x = 100,746.72 × 39,471
  4. Step 4: Simplify right side
    73,005x = 3,976,573,785.12
  5. Step 5: Solve for x
    x = 3,976,573,785.12/73,005
  6. Step 6: Final answer
    x = 54,469.88

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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.