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Finding the Fourth Proportional to 81,371.89, 122,057.84 and 22,209.14

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Solution

The fourth proportional to 81,371.89, 122,057.84 and 22,209.14 is: 33,313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,371.89 : 122,057.84 = 22,209.14 : x
  2. Step 2: Convert to fraction form
    81,371.89/122,057.84 = 22,209.14/x
  3. Step 3: Cross multiply
    81,371.89x = 122,057.84 × 22,209.14
  4. Step 4: Simplify right side
    81,371.89x = 2,710,799,205.82
  5. Step 5: Solve for x
    x = 2,710,799,205.82/81,371.89
  6. Step 6: Final answer
    x = 33,313.71

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1.5x scale

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.