Home / 81,921.24-122,894.82-29,329.56

Finding the Fourth Proportional to 81,921.24, 122,894.82 and 29,329.56

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Solution

The fourth proportional to 81,921.24, 122,894.82 and 29,329.56 is: 43,998.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,921.24 : 122,894.82 = 29,329.56 : x
  2. Step 2: Convert to fraction form
    81,921.24/122,894.82 = 29,329.56/x
  3. Step 3: Cross multiply
    81,921.24x = 122,894.82 × 29,329.56
  4. Step 4: Simplify right side
    81,921.24x = 3,604,450,996.88
  5. Step 5: Solve for x
    x = 3,604,450,996.88/81,921.24
  6. Step 6: Final answer
    x = 43,998.98

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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.