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Finding the Fourth Proportional to 68,791.55, 103,170 and 26,657.18

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Solution

The fourth proportional to 68,791.55, 103,170 and 26,657.18 is: 39,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,791.55 : 103,170 = 26,657.18 : x
  2. Step 2: Convert to fraction form
    68,791.55/103,170 = 26,657.18/x
  3. Step 3: Cross multiply
    68,791.55x = 103,170 × 26,657.18
  4. Step 4: Simplify right side
    68,791.55x = 2,750,220,744.75
  5. Step 5: Solve for x
    x = 2,750,220,744.75/68,791.55
  6. Step 6: Final answer
    x = 39,979.05

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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.