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Finding the Fourth Proportional to 83,891.57, 125,837.39 and 69,069.36

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Solution

The fourth proportional to 83,891.57, 125,837.39 and 69,069.36 is: 103,604.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,891.57 : 125,837.39 = 69,069.36 : x
  2. Step 2: Convert to fraction form
    83,891.57/125,837.39 = 69,069.36/x
  3. Step 3: Cross multiply
    83,891.57x = 125,837.39 × 69,069.36
  4. Step 4: Simplify right side
    83,891.57x = 8,691,507,646.02
  5. Step 5: Solve for x
    x = 8,691,507,646.02/83,891.57
  6. Step 6: Final answer
    x = 103,604.06

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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.