Home / 81,926.88-113,129.28-51,764.64

Finding the Fourth Proportional to 81,926.88, 113,129.28 and 51,764.64

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Solution

The fourth proportional to 81,926.88, 113,129.28 and 51,764.64 is: 71,479.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,926.88 : 113,129.28 = 51,764.64 : x
  2. Step 2: Convert to fraction form
    81,926.88/113,129.28 = 51,764.64/x
  3. Step 3: Cross multiply
    81,926.88x = 113,129.28 × 51,764.64
  4. Step 4: Simplify right side
    81,926.88x = 5,856,096,452.66
  5. Step 5: Solve for x
    x = 5,856,096,452.66/81,926.88
  6. Step 6: Final answer
    x = 71,479.55

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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.