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Finding the Fourth Proportional to 67,554, 101,331.36 and 18,306

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Solution

The fourth proportional to 67,554, 101,331.36 and 18,306 is: 27,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,554 : 101,331.36 = 18,306 : x
  2. Step 2: Convert to fraction form
    67,554/101,331.36 = 18,306/x
  3. Step 3: Cross multiply
    67,554x = 101,331.36 × 18,306
  4. Step 4: Simplify right side
    67,554x = 1,854,971,876.16
  5. Step 5: Solve for x
    x = 1,854,971,876.16/67,554
  6. Step 6: Final answer
    x = 27,459.10

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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.