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Finding the Fourth Proportional to 68,708.90, 103,003.35 and 26,617.70

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Solution

The fourth proportional to 68,708.90, 103,003.35 and 26,617.70 is: 39,903.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,708.90 : 103,003.35 = 26,617.70 : x
  2. Step 2: Convert to fraction form
    68,708.90/103,003.35 = 26,617.70/x
  3. Step 3: Cross multiply
    68,708.90x = 103,003.35 × 26,617.70
  4. Step 4: Simplify right side
    68,708.90x = 2,741,712,269.30
  5. Step 5: Solve for x
    x = 2,741,712,269.30/68,708.90
  6. Step 6: Final answer
    x = 39,903.31

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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.