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Finding the Fourth Proportional to 71,721, 107,598.78 and 22,473

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Solution

The fourth proportional to 71,721, 107,598.78 and 22,473 is: 33,714.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,721 : 107,598.78 = 22,473 : x
  2. Step 2: Convert to fraction form
    71,721/107,598.78 = 22,473/x
  3. Step 3: Cross multiply
    71,721x = 107,598.78 × 22,473
  4. Step 4: Simplify right side
    71,721x = 2,418,067,382.94
  5. Step 5: Solve for x
    x = 2,418,067,382.94/71,721
  6. Step 6: Final answer
    x = 33,714.91

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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.