Home / 81,375.36-112,308.30-49,542.36

Finding the Fourth Proportional to 81,375.36, 112,308.30 and 49,542.36

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Solution

The fourth proportional to 81,375.36, 112,308.30 and 49,542.36 is: 68,374.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,375.36 : 112,308.30 = 49,542.36 : x
  2. Step 2: Convert to fraction form
    81,375.36/112,308.30 = 49,542.36/x
  3. Step 3: Cross multiply
    81,375.36x = 112,308.30 × 49,542.36
  4. Step 4: Simplify right side
    81,375.36x = 5,564,018,229.59
  5. Step 5: Solve for x
    x = 5,564,018,229.59/81,375.36
  6. Step 6: Final answer
    x = 68,374.73

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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.