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Finding the Fourth Proportional to 66,843.60, 100,265.40 and 49,390.80

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Solution

The fourth proportional to 66,843.60, 100,265.40 and 49,390.80 is: 74,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,843.60 : 100,265.40 = 49,390.80 : x
  2. Step 2: Convert to fraction form
    66,843.60/100,265.40 = 49,390.80/x
  3. Step 3: Cross multiply
    66,843.60x = 100,265.40 × 49,390.80
  4. Step 4: Simplify right side
    66,843.60x = 4,952,188,318.32
  5. Step 5: Solve for x
    x = 4,952,188,318.32/66,843.60
  6. Step 6: Final answer
    x = 74,086.20

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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.