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Finding the Fourth Proportional to 73,854.40, 110,781.60 and 66,481.60

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Solution

The fourth proportional to 73,854.40, 110,781.60 and 66,481.60 is: 99,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,854.40 : 110,781.60 = 66,481.60 : x
  2. Step 2: Convert to fraction form
    73,854.40/110,781.60 = 66,481.60/x
  3. Step 3: Cross multiply
    73,854.40x = 110,781.60 × 66,481.60
  4. Step 4: Simplify right side
    73,854.40x = 7,364,938,018.56
  5. Step 5: Solve for x
    x = 7,364,938,018.56/73,854.40
  6. Step 6: Final answer
    x = 99,722.40

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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.