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Finding the Fourth Proportional to 68,708.40, 103,002.60 and 26,617.20

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Solution

The fourth proportional to 68,708.40, 103,002.60 and 26,617.20 is: 39,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,708.40 : 103,002.60 = 26,617.20 : x
  2. Step 2: Convert to fraction form
    68,708.40/103,002.60 = 26,617.20/x
  3. Step 3: Cross multiply
    68,708.40x = 103,002.60 × 26,617.20
  4. Step 4: Simplify right side
    68,708.40x = 2,741,640,804.72
  5. Step 5: Solve for x
    x = 2,741,640,804.72/68,708.40
  6. Step 6: Final answer
    x = 39,902.56

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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.