Home / 81,727.28-112,522.92-69,742.52

Finding the Fourth Proportional to 81,727.28, 112,522.92 and 69,742.52

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Solution

The fourth proportional to 81,727.28, 112,522.92 and 69,742.52 is: 96,022.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,727.28 : 112,522.92 = 69,742.52 : x
  2. Step 2: Convert to fraction form
    81,727.28/112,522.92 = 69,742.52/x
  3. Step 3: Cross multiply
    81,727.28x = 112,522.92 × 69,742.52
  4. Step 4: Simplify right side
    81,727.28x = 7,847,631,998.56
  5. Step 5: Solve for x
    x = 7,847,631,998.56/81,727.28
  6. Step 6: Final answer
    x = 96,022.18

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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.