Home / 81,786.68-122,705.94-29,195

Finding the Fourth Proportional to 81,786.68, 122,705.94 and 29,195

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Solution

The fourth proportional to 81,786.68, 122,705.94 and 29,195 is: 43,801.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,786.68 : 122,705.94 = 29,195 : x
  2. Step 2: Convert to fraction form
    81,786.68/122,705.94 = 29,195/x
  3. Step 3: Cross multiply
    81,786.68x = 122,705.94 × 29,195
  4. Step 4: Simplify right side
    81,786.68x = 3,582,399,918.30
  5. Step 5: Solve for x
    x = 3,582,399,918.30/81,786.68
  6. Step 6: Final answer
    x = 43,801.75

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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.