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Finding the Fourth Proportional to 72,634.59, 108,958.16 and 20,044.08

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Solution

The fourth proportional to 72,634.59, 108,958.16 and 20,044.08 is: 30,067.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,634.59 : 108,958.16 = 20,044.08 : x
  2. Step 2: Convert to fraction form
    72,634.59/108,958.16 = 20,044.08/x
  3. Step 3: Cross multiply
    72,634.59x = 108,958.16 × 20,044.08
  4. Step 4: Simplify right side
    72,634.59x = 2,183,965,975.47
  5. Step 5: Solve for x
    x = 2,183,965,975.47/72,634.59
  6. Step 6: Final answer
    x = 30,067.85

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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.