Home / 81,224.60-121,845.04-27,909.56

Finding the Fourth Proportional to 81,224.60, 121,845.04 and 27,909.56

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Solution

The fourth proportional to 81,224.60, 121,845.04 and 27,909.56 is: 41,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,224.60 : 121,845.04 = 27,909.56 : x
  2. Step 2: Convert to fraction form
    81,224.60/121,845.04 = 27,909.56/x
  3. Step 3: Cross multiply
    81,224.60x = 121,845.04 × 27,909.56
  4. Step 4: Simplify right side
    81,224.60x = 3,400,640,845.36
  5. Step 5: Solve for x
    x = 3,400,640,845.36/81,224.60
  6. Step 6: Final answer
    x = 41,867.13

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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.