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Finding the Fourth Proportional to 68,796.72, 103,195.22 and 18,877.50

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Solution

The fourth proportional to 68,796.72, 103,195.22 and 18,877.50 is: 28,316.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,796.72 : 103,195.22 = 18,877.50 : x
  2. Step 2: Convert to fraction form
    68,796.72/103,195.22 = 18,877.50/x
  3. Step 3: Cross multiply
    68,796.72x = 103,195.22 × 18,877.50
  4. Step 4: Simplify right side
    68,796.72x = 1,948,067,765.55
  5. Step 5: Solve for x
    x = 1,948,067,765.55/68,796.72
  6. Step 6: Final answer
    x = 28,316.29

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1.5x scale

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.