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Finding the Fourth Proportional to 66,881.06, 100,321.78 and 16,961.19

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Solution

The fourth proportional to 66,881.06, 100,321.78 and 16,961.19 is: 25,441.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,881.06 : 100,321.78 = 16,961.19 : x
  2. Step 2: Convert to fraction form
    66,881.06/100,321.78 = 16,961.19/x
  3. Step 3: Cross multiply
    66,881.06x = 100,321.78 × 16,961.19
  4. Step 4: Simplify right side
    66,881.06x = 1,701,576,771.72
  5. Step 5: Solve for x
    x = 1,701,576,771.72/66,881.06
  6. Step 6: Final answer
    x = 25,441.83

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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.