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Finding the Fourth Proportional to 68,799.25, 103,198.98 and 18,880.03

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Solution

The fourth proportional to 68,799.25, 103,198.98 and 18,880.03 is: 28,320.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,799.25 : 103,198.98 = 18,880.03 : x
  2. Step 2: Convert to fraction form
    68,799.25/103,198.98 = 18,880.03/x
  3. Step 3: Cross multiply
    68,799.25x = 103,198.98 × 18,880.03
  4. Step 4: Simplify right side
    68,799.25x = 1,948,399,322.37
  5. Step 5: Solve for x
    x = 1,948,399,322.37/68,799.25
  6. Step 6: Final answer
    x = 28,320.07

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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.