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Finding the Fourth Proportional to 73,609.60, 110,414.40 and 66,467.20

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Solution

The fourth proportional to 73,609.60, 110,414.40 and 66,467.20 is: 99,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,609.60 : 110,414.40 = 66,467.20 : x
  2. Step 2: Convert to fraction form
    73,609.60/110,414.40 = 66,467.20/x
  3. Step 3: Cross multiply
    73,609.60x = 110,414.40 × 66,467.20
  4. Step 4: Simplify right side
    73,609.60x = 7,338,936,007.68
  5. Step 5: Solve for x
    x = 7,338,936,007.68/73,609.60
  6. Step 6: Final answer
    x = 99,700.80

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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.