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Finding the Fourth Proportional to 68,397.09, 102,571 and 28,956.97

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Solution

The fourth proportional to 68,397.09, 102,571 and 28,956.97 is: 43,425.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,397.09 : 102,571 = 28,956.97 : x
  2. Step 2: Convert to fraction form
    68,397.09/102,571 = 28,956.97/x
  3. Step 3: Cross multiply
    68,397.09x = 102,571 × 28,956.97
  4. Step 4: Simplify right side
    68,397.09x = 2,970,145,369.87
  5. Step 5: Solve for x
    x = 2,970,145,369.87/68,397.09
  6. Step 6: Final answer
    x = 43,425.03

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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.