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Finding the Fourth Proportional to 71,927.78, 107,891.52 and 19,337.26

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Solution

The fourth proportional to 71,927.78, 107,891.52 and 19,337.26 is: 29,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,927.78 : 107,891.52 = 19,337.26 : x
  2. Step 2: Convert to fraction form
    71,927.78/107,891.52 = 19,337.26/x
  3. Step 3: Cross multiply
    71,927.78x = 107,891.52 × 19,337.26
  4. Step 4: Simplify right side
    71,927.78x = 2,086,326,374.04
  5. Step 5: Solve for x
    x = 2,086,326,374.04/71,927.78
  6. Step 6: Final answer
    x = 29,005.85

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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.