Home / 81,921.24-113,086.17-55,079.28

Finding the Fourth Proportional to 81,921.24, 113,086.17 and 55,079.28

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Solution

The fourth proportional to 81,921.24, 113,086.17 and 55,079.28 is: 76,032.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,921.24 : 113,086.17 = 55,079.28 : x
  2. Step 2: Convert to fraction form
    81,921.24/113,086.17 = 55,079.28/x
  3. Step 3: Cross multiply
    81,921.24x = 113,086.17 × 55,079.28
  4. Step 4: Simplify right side
    81,921.24x = 6,228,704,821.56
  5. Step 5: Solve for x
    x = 6,228,704,821.56/81,921.24
  6. Step 6: Final answer
    x = 76,032.84

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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.