Home / 81,727.78-112,523.61-69,743.02

Finding the Fourth Proportional to 81,727.78, 112,523.61 and 69,743.02

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Solution

The fourth proportional to 81,727.78, 112,523.61 and 69,743.02 is: 96,022.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,727.78 : 112,523.61 = 69,743.02 : x
  2. Step 2: Convert to fraction form
    81,727.78/112,523.61 = 69,743.02/x
  3. Step 3: Cross multiply
    81,727.78x = 112,523.61 × 69,743.02
  4. Step 4: Simplify right side
    81,727.78x = 7,847,736,382.70
  5. Step 5: Solve for x
    x = 7,847,736,382.70/81,727.78
  6. Step 6: Final answer
    x = 96,022.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.