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Finding the Fourth Proportional to 73,104.20, 109,659.54 and 20,512.52

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Solution

The fourth proportional to 73,104.20, 109,659.54 and 20,512.52 is: 30,769.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,104.20 : 109,659.54 = 20,512.52 : x
  2. Step 2: Convert to fraction form
    73,104.20/109,659.54 = 20,512.52/x
  3. Step 3: Cross multiply
    73,104.20x = 109,659.54 × 20,512.52
  4. Step 4: Simplify right side
    73,104.20x = 2,249,393,507.44
  5. Step 5: Solve for x
    x = 2,249,393,507.44/73,104.20
  6. Step 6: Final answer
    x = 30,769.69

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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.