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Finding the Fourth Proportional to 68,797.63, 103,189.51 and 18,882.75

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Solution

The fourth proportional to 68,797.63, 103,189.51 and 18,882.75 is: 28,322.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,797.63 : 103,189.51 = 18,882.75 : x
  2. Step 2: Convert to fraction form
    68,797.63/103,189.51 = 18,882.75/x
  3. Step 3: Cross multiply
    68,797.63x = 103,189.51 × 18,882.75
  4. Step 4: Simplify right side
    68,797.63x = 1,948,501,719.95
  5. Step 5: Solve for x
    x = 1,948,501,719.95/68,797.63
  6. Step 6: Final answer
    x = 28,322.22

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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.