Home / 78,811.31-108,759.62-50,517.07

Finding the Fourth Proportional to 78,811.31, 108,759.62 and 50,517.07

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Solution

The fourth proportional to 78,811.31, 108,759.62 and 50,517.07 is: 69,713.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,811.31 : 108,759.62 = 50,517.07 : x
  2. Step 2: Convert to fraction form
    78,811.31/108,759.62 = 50,517.07/x
  3. Step 3: Cross multiply
    78,811.31x = 108,759.62 × 50,517.07
  4. Step 4: Simplify right side
    78,811.31x = 5,494,217,191.11
  5. Step 5: Solve for x
    x = 5,494,217,191.11/78,811.31
  6. Step 6: Final answer
    x = 69,713.56

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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.