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Finding the Fourth Proportional to 70,672.62, 106,012.60 and 18,082.56

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Solution

The fourth proportional to 70,672.62, 106,012.60 and 18,082.56 is: 27,124.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,672.62 : 106,012.60 = 18,082.56 : x
  2. Step 2: Convert to fraction form
    70,672.62/106,012.60 = 18,082.56/x
  3. Step 3: Cross multiply
    70,672.62x = 106,012.60 × 18,082.56
  4. Step 4: Simplify right side
    70,672.62x = 1,916,979,200.26
  5. Step 5: Solve for x
    x = 1,916,979,200.26/70,672.62
  6. Step 6: Final answer
    x = 27,124.78

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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.