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Finding the Fourth Proportional to 66,871.20, 100,345.68 and 27,456.60

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Solution

The fourth proportional to 66,871.20, 100,345.68 and 27,456.60 is: 41,200.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,871.20 : 100,345.68 = 27,456.60 : x
  2. Step 2: Convert to fraction form
    66,871.20/100,345.68 = 27,456.60/x
  3. Step 3: Cross multiply
    66,871.20x = 100,345.68 × 27,456.60
  4. Step 4: Simplify right side
    66,871.20x = 2,755,151,197.49
  5. Step 5: Solve for x
    x = 2,755,151,197.49/66,871.20
  6. Step 6: Final answer
    x = 41,200.86

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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.