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Finding the Fourth Proportional to 72,553.80, 108,817.92 and 19,950.60

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Solution

The fourth proportional to 72,553.80, 108,817.92 and 19,950.60 is: 29,922.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,553.80 : 108,817.92 = 19,950.60 : x
  2. Step 2: Convert to fraction form
    72,553.80/108,817.92 = 19,950.60/x
  3. Step 3: Cross multiply
    72,553.80x = 108,817.92 × 19,950.60
  4. Step 4: Simplify right side
    72,553.80x = 2,170,982,794.75
  5. Step 5: Solve for x
    x = 2,170,982,794.75/72,553.80
  6. Step 6: Final answer
    x = 29,922.39

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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.