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Finding the Fourth Proportional to 79,624.89, 109,879.61 and 43,811.55

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Solution

The fourth proportional to 79,624.89, 109,879.61 and 43,811.55 is: 60,458.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,624.89 : 109,879.61 = 43,811.55 : x
  2. Step 2: Convert to fraction form
    79,624.89/109,879.61 = 43,811.55/x
  3. Step 3: Cross multiply
    79,624.89x = 109,879.61 × 43,811.55
  4. Step 4: Simplify right side
    79,624.89x = 4,813,995,808.44
  5. Step 5: Solve for x
    x = 4,813,995,808.44/79,624.89
  6. Step 6: Final answer
    x = 60,458.43

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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.