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Finding the Fourth Proportional to 79,299.75, 109,432.89 and 43,489.65

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Solution

The fourth proportional to 79,299.75, 109,432.89 and 43,489.65 is: 60,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,299.75 : 109,432.89 = 43,489.65 : x
  2. Step 2: Convert to fraction form
    79,299.75/109,432.89 = 43,489.65/x
  3. Step 3: Cross multiply
    79,299.75x = 109,432.89 × 43,489.65
  4. Step 4: Simplify right side
    79,299.75x = 4,759,198,084.59
  5. Step 5: Solve for x
    x = 4,759,198,084.59/79,299.75
  6. Step 6: Final answer
    x = 60,015.30

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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.