Home / 81,326.28-121,964.52-28,723.44

Finding the Fourth Proportional to 81,326.28, 121,964.52 and 28,723.44

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Solution

The fourth proportional to 81,326.28, 121,964.52 and 28,723.44 is: 43,076.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,326.28 : 121,964.52 = 28,723.44 : x
  2. Step 2: Convert to fraction form
    81,326.28/121,964.52 = 28,723.44/x
  3. Step 3: Cross multiply
    81,326.28x = 121,964.52 × 28,723.44
  4. Step 4: Simplify right side
    81,326.28x = 3,503,240,572.35
  5. Step 5: Solve for x
    x = 3,503,240,572.35/81,326.28
  6. Step 6: Final answer
    x = 43,076.37

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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.