Home / 72,132.73-108,199.09-19,540.85

Finding the Fourth Proportional to 72,132.73, 108,199.09 and 19,540.85

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Solution

The fourth proportional to 72,132.73, 108,199.09 and 19,540.85 is: 29,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,132.73 : 108,199.09 = 19,540.85 : x
  2. Step 2: Convert to fraction form
    72,132.73/108,199.09 = 19,540.85/x
  3. Step 3: Cross multiply
    72,132.73x = 108,199.09 × 19,540.85
  4. Step 4: Simplify right side
    72,132.73x = 2,114,301,671.26
  5. Step 5: Solve for x
    x = 2,114,301,671.26/72,132.73
  6. Step 6: Final answer
    x = 29,311.27

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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.