Home / 81,743.82-122,625.33-29,160.78

Finding the Fourth Proportional to 81,743.82, 122,625.33 and 29,160.78

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Solution

The fourth proportional to 81,743.82, 122,625.33 and 29,160.78 is: 43,744.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,743.82 : 122,625.33 = 29,160.78 : x
  2. Step 2: Convert to fraction form
    81,743.82/122,625.33 = 29,160.78/x
  3. Step 3: Cross multiply
    81,743.82x = 122,625.33 × 29,160.78
  4. Step 4: Simplify right side
    81,743.82x = 3,575,850,270.56
  5. Step 5: Solve for x
    x = 3,575,850,270.56/81,743.82
  6. Step 6: Final answer
    x = 43,744.59

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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.