Home / 81,278.94-121,952.89-43,795.43

Finding the Fourth Proportional to 81,278.94, 121,952.89 and 43,795.43

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Solution

The fourth proportional to 81,278.94, 121,952.89 and 43,795.43 is: 65,711.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,278.94 : 121,952.89 = 43,795.43 : x
  2. Step 2: Convert to fraction form
    81,278.94/121,952.89 = 43,795.43/x
  3. Step 3: Cross multiply
    81,278.94x = 121,952.89 × 43,795.43
  4. Step 4: Simplify right side
    81,278.94x = 5,340,979,845.58
  5. Step 5: Solve for x
    x = 5,340,979,845.58/81,278.94
  6. Step 6: Final answer
    x = 65,711.73

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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.