Home / 81,910.36-122,865.45-25,755.38

Finding the Fourth Proportional to 81,910.36, 122,865.45 and 25,755.38

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Solution

The fourth proportional to 81,910.36, 122,865.45 and 25,755.38 is: 38,633.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,910.36 : 122,865.45 = 25,755.38 : x
  2. Step 2: Convert to fraction form
    81,910.36/122,865.45 = 25,755.38/x
  3. Step 3: Cross multiply
    81,910.36x = 122,865.45 × 25,755.38
  4. Step 4: Simplify right side
    81,910.36x = 3,164,446,353.62
  5. Step 5: Solve for x
    x = 3,164,446,353.62/81,910.36
  6. Step 6: Final answer
    x = 38,633.04

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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.