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Finding the Fourth Proportional to 66,741.44, 100,161.48 and 53,750.60

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Solution

The fourth proportional to 66,741.44, 100,161.48 and 53,750.60 is: 80,665.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,741.44 : 100,161.48 = 53,750.60 : x
  2. Step 2: Convert to fraction form
    66,741.44/100,161.48 = 53,750.60/x
  3. Step 3: Cross multiply
    66,741.44x = 100,161.48 × 53,750.60
  4. Step 4: Simplify right side
    66,741.44x = 5,383,739,646.89
  5. Step 5: Solve for x
    x = 5,383,739,646.89/66,741.44
  6. Step 6: Final answer
    x = 80,665.62

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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.