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Finding the Fourth Proportional to 68,704.28, 94,817.64 and 38,489

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Solution

The fourth proportional to 68,704.28, 94,817.64 and 38,489 is: 53,118.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,704.28 : 94,817.64 = 38,489 : x
  2. Step 2: Convert to fraction form
    68,704.28/94,817.64 = 38,489/x
  3. Step 3: Cross multiply
    68,704.28x = 94,817.64 × 38,489
  4. Step 4: Simplify right side
    68,704.28x = 3,649,436,145.96
  5. Step 5: Solve for x
    x = 3,649,436,145.96/68,704.28
  6. Step 6: Final answer
    x = 53,118.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.