Home / 81,161.27-121,769.58-43,725.18

Finding the Fourth Proportional to 81,161.27, 121,769.58 and 43,725.18

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Solution

The fourth proportional to 81,161.27, 121,769.58 and 43,725.18 is: 65,602.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.27 : 121,769.58 = 43,725.18 : x
  2. Step 2: Convert to fraction form
    81,161.27/121,769.58 = 43,725.18/x
  3. Step 3: Cross multiply
    81,161.27x = 121,769.58 × 43,725.18
  4. Step 4: Simplify right side
    81,161.27x = 5,324,396,804.02
  5. Step 5: Solve for x
    x = 5,324,396,804.02/81,161.27
  6. Step 6: Final answer
    x = 65,602.68

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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.