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Finding the Fourth Proportional to 67,203.27, 100,819.95 and 20,459.79

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Solution

The fourth proportional to 67,203.27, 100,819.95 and 20,459.79 is: 30,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,203.27 : 100,819.95 = 20,459.79 : x
  2. Step 2: Convert to fraction form
    67,203.27/100,819.95 = 20,459.79/x
  3. Step 3: Cross multiply
    67,203.27x = 100,819.95 × 20,459.79
  4. Step 4: Simplify right side
    67,203.27x = 2,062,755,004.81
  5. Step 5: Solve for x
    x = 2,062,755,004.81/67,203.27
  6. Step 6: Final answer
    x = 30,694.27

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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.