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Finding the Fourth Proportional to 68,147.60, 102,221.40 and 57,261.20

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Solution

The fourth proportional to 68,147.60, 102,221.40 and 57,261.20 is: 85,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,147.60 : 102,221.40 = 57,261.20 : x
  2. Step 2: Convert to fraction form
    68,147.60/102,221.40 = 57,261.20/x
  3. Step 3: Cross multiply
    68,147.60x = 102,221.40 × 57,261.20
  4. Step 4: Simplify right side
    68,147.60x = 5,853,320,029.68
  5. Step 5: Solve for x
    x = 5,853,320,029.68/68,147.60
  6. Step 6: Final answer
    x = 85,891.80

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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.