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Finding the Fourth Proportional to 68,662.10, 102,993.15 and 27,103.70

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Solution

The fourth proportional to 68,662.10, 102,993.15 and 27,103.70 is: 40,655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,662.10 : 102,993.15 = 27,103.70 : x
  2. Step 2: Convert to fraction form
    68,662.10/102,993.15 = 27,103.70/x
  3. Step 3: Cross multiply
    68,662.10x = 102,993.15 × 27,103.70
  4. Step 4: Simplify right side
    68,662.10x = 2,791,495,439.66
  5. Step 5: Solve for x
    x = 2,791,495,439.66/68,662.10
  6. Step 6: Final answer
    x = 40,655.55

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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.