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Finding the Fourth Proportional to 79,171.43, 109,229.45 and 45,155.34

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Solution

The fourth proportional to 79,171.43, 109,229.45 and 45,155.34 is: 62,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,171.43 : 109,229.45 = 45,155.34 : x
  2. Step 2: Convert to fraction form
    79,171.43/109,229.45 = 45,155.34/x
  3. Step 3: Cross multiply
    79,171.43x = 109,229.45 × 45,155.34
  4. Step 4: Simplify right side
    79,171.43x = 4,932,292,726.99
  5. Step 5: Solve for x
    x = 4,932,292,726.99/79,171.43
  6. Step 6: Final answer
    x = 62,298.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.