Home / 72,104.19-108,138.03-21,491.54

Finding the Fourth Proportional to 72,104.19, 108,138.03 and 21,491.54

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Solution

The fourth proportional to 72,104.19, 108,138.03 and 21,491.54 is: 32,231.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,104.19 : 108,138.03 = 21,491.54 : x
  2. Step 2: Convert to fraction form
    72,104.19/108,138.03 = 21,491.54/x
  3. Step 3: Cross multiply
    72,104.19x = 108,138.03 × 21,491.54
  4. Step 4: Simplify right side
    72,104.19x = 2,324,052,256.58
  5. Step 5: Solve for x
    x = 2,324,052,256.58/72,104.19
  6. Step 6: Final answer
    x = 32,231.86

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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.