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Finding the Fourth Proportional to 72,384.44, 108,584.28 and 19,793.97

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Solution

The fourth proportional to 72,384.44, 108,584.28 and 19,793.97 is: 29,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,384.44 : 108,584.28 = 19,793.97 : x
  2. Step 2: Convert to fraction form
    72,384.44/108,584.28 = 19,793.97/x
  3. Step 3: Cross multiply
    72,384.44x = 108,584.28 × 19,793.97
  4. Step 4: Simplify right side
    72,384.44x = 2,149,313,980.79
  5. Step 5: Solve for x
    x = 2,149,313,980.79/72,384.44
  6. Step 6: Final answer
    x = 29,693.04

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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.