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Finding the Fourth Proportional to 71,553.88, 107,338.17 and 18,963.37

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Solution

The fourth proportional to 71,553.88, 107,338.17 and 18,963.37 is: 28,447.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,553.88 : 107,338.17 = 18,963.37 : x
  2. Step 2: Convert to fraction form
    71,553.88/107,338.17 = 18,963.37/x
  3. Step 3: Cross multiply
    71,553.88x = 107,338.17 × 18,963.37
  4. Step 4: Simplify right side
    71,553.88x = 2,035,493,432.83
  5. Step 5: Solve for x
    x = 2,035,493,432.83/71,553.88
  6. Step 6: Final answer
    x = 28,447.00

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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.