Home / 81,268.44-121,949.10-43,828.26

Finding the Fourth Proportional to 81,268.44, 121,949.10 and 43,828.26

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Solution

The fourth proportional to 81,268.44, 121,949.10 and 43,828.26 is: 65,767.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,268.44 : 121,949.10 = 43,828.26 : x
  2. Step 2: Convert to fraction form
    81,268.44/121,949.10 = 43,828.26/x
  3. Step 3: Cross multiply
    81,268.44x = 121,949.10 × 43,828.26
  4. Step 4: Simplify right side
    81,268.44x = 5,344,816,861.57
  5. Step 5: Solve for x
    x = 5,344,816,861.57/81,268.44
  6. Step 6: Final answer
    x = 65,767.44

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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.