Home / 47,912.20-71,868.58-12,371.09

Finding the Fourth Proportional to 47,912.20, 71,868.58 and 12,371.09

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Solution

The fourth proportional to 47,912.20, 71,868.58 and 12,371.09 is: 18,556.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,912.20 : 71,868.58 = 12,371.09 : x
  2. Step 2: Convert to fraction form
    47,912.20/71,868.58 = 12,371.09/x
  3. Step 3: Cross multiply
    47,912.20x = 71,868.58 × 12,371.09
  4. Step 4: Simplify right side
    47,912.20x = 889,092,820.10
  5. Step 5: Solve for x
    x = 889,092,820.10/47,912.20
  6. Step 6: Final answer
    x = 18,556.71

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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.