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Finding the Fourth Proportional to 67,734, 101,601.36 and 18,486

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Solution

The fourth proportional to 67,734, 101,601.36 and 18,486 is: 27,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,734 : 101,601.36 = 18,486 : x
  2. Step 2: Convert to fraction form
    67,734/101,601.36 = 18,486/x
  3. Step 3: Cross multiply
    67,734x = 101,601.36 × 18,486
  4. Step 4: Simplify right side
    67,734x = 1,878,202,740.96
  5. Step 5: Solve for x
    x = 1,878,202,740.96/67,734
  6. Step 6: Final answer
    x = 27,729.10

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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.