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Finding the Fourth Proportional to 47,909.44, 71,861.72 and 18,325

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Solution

The fourth proportional to 47,909.44, 71,861.72 and 18,325 is: 27,486.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,909.44 : 71,861.72 = 18,325 : x
  2. Step 2: Convert to fraction form
    47,909.44/71,861.72 = 18,325/x
  3. Step 3: Cross multiply
    47,909.44x = 71,861.72 × 18,325
  4. Step 4: Simplify right side
    47,909.44x = 1,316,866,019
  5. Step 5: Solve for x
    x = 1,316,866,019/47,909.44
  6. Step 6: Final answer
    x = 27,486.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.