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Finding the Fourth Proportional to 66,874.59, 100,318.23 and 18,843.03

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Solution

The fourth proportional to 66,874.59, 100,318.23 and 18,843.03 is: 28,266.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,874.59 : 100,318.23 = 18,843.03 : x
  2. Step 2: Convert to fraction form
    66,874.59/100,318.23 = 18,843.03/x
  3. Step 3: Cross multiply
    66,874.59x = 100,318.23 × 18,843.03
  4. Step 4: Simplify right side
    66,874.59x = 1,890,299,417.44
  5. Step 5: Solve for x
    x = 1,890,299,417.44/66,874.59
  6. Step 6: Final answer
    x = 28,266.33

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1.5x scale

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.