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Finding the Fourth Proportional to 79,170.57, 109,251.31 and 43,353.65

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Solution

The fourth proportional to 79,170.57, 109,251.31 and 43,353.65 is: 59,825.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,170.57 : 109,251.31 = 43,353.65 : x
  2. Step 2: Convert to fraction form
    79,170.57/109,251.31 = 43,353.65/x
  3. Step 3: Cross multiply
    79,170.57x = 109,251.31 × 43,353.65
  4. Step 4: Simplify right side
    79,170.57x = 4,736,442,839.01
  5. Step 5: Solve for x
    x = 4,736,442,839.01/79,170.57
  6. Step 6: Final answer
    x = 59,825.80

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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.