Home / 81,929.36-122,893.97-22,765

Finding the Fourth Proportional to 81,929.36, 122,893.97 and 22,765

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Solution

The fourth proportional to 81,929.36, 122,893.97 and 22,765 is: 34,147.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,929.36 : 122,893.97 = 22,765 : x
  2. Step 2: Convert to fraction form
    81,929.36/122,893.97 = 22,765/x
  3. Step 3: Cross multiply
    81,929.36x = 122,893.97 × 22,765
  4. Step 4: Simplify right side
    81,929.36x = 2,797,681,227.05
  5. Step 5: Solve for x
    x = 2,797,681,227.05/81,929.36
  6. Step 6: Final answer
    x = 34,147.48

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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.