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Finding the Fourth Proportional to 79,171.66, 109,229.80 and 45,155.70

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Solution

The fourth proportional to 79,171.66, 109,229.80 and 45,155.70 is: 62,299.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,171.66 : 109,229.80 = 45,155.70 : x
  2. Step 2: Convert to fraction form
    79,171.66/109,229.80 = 45,155.70/x
  3. Step 3: Cross multiply
    79,171.66x = 109,229.80 × 45,155.70
  4. Step 4: Simplify right side
    79,171.66x = 4,932,348,079.86
  5. Step 5: Solve for x
    x = 4,932,348,079.86/79,171.66
  6. Step 6: Final answer
    x = 62,299.41

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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.