Home / 81,267.78-121,913.34-25,112.79

Finding the Fourth Proportional to 81,267.78, 121,913.34 and 25,112.79

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Solution

The fourth proportional to 81,267.78, 121,913.34 and 25,112.79 is: 37,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,267.78 : 121,913.34 = 25,112.79 : x
  2. Step 2: Convert to fraction form
    81,267.78/121,913.34 = 25,112.79/x
  3. Step 3: Cross multiply
    81,267.78x = 121,913.34 × 25,112.79
  4. Step 4: Simplify right side
    81,267.78x = 3,061,584,105.62
  5. Step 5: Solve for x
    x = 3,061,584,105.62/81,267.78
  6. Step 6: Final answer
    x = 37,672.79

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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.