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Finding the Fourth Proportional to 81,354.88, 122,019.78 and 22,195.36

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Solution

The fourth proportional to 81,354.88, 122,019.78 and 22,195.36 is: 33,289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,354.88 : 122,019.78 = 22,195.36 : x
  2. Step 2: Convert to fraction form
    81,354.88/122,019.78 = 22,195.36/x
  3. Step 3: Cross multiply
    81,354.88x = 122,019.78 × 22,195.36
  4. Step 4: Simplify right side
    81,354.88x = 2,708,272,944.22
  5. Step 5: Solve for x
    x = 2,708,272,944.22/81,354.88
  6. Step 6: Final answer
    x = 33,289.62

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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.