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Finding the Fourth Proportional to 72,027.24, 108,027.78 and 19,424.41

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Solution

The fourth proportional to 72,027.24, 108,027.78 and 19,424.41 is: 29,133.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,027.24 : 108,027.78 = 19,424.41 : x
  2. Step 2: Convert to fraction form
    72,027.24/108,027.78 = 19,424.41/x
  3. Step 3: Cross multiply
    72,027.24x = 108,027.78 × 19,424.41
  4. Step 4: Simplify right side
    72,027.24x = 2,098,375,890.11
  5. Step 5: Solve for x
    x = 2,098,375,890.11/72,027.24
  6. Step 6: Final answer
    x = 29,133.09

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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.