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Finding the Fourth Proportional to 64,942.56, 89,608.68 and 36,642.78

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Solution

The fourth proportional to 64,942.56, 89,608.68 and 36,642.78 is: 50,560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,942.56 : 89,608.68 = 36,642.78 : x
  2. Step 2: Convert to fraction form
    64,942.56/89,608.68 = 36,642.78/x
  3. Step 3: Cross multiply
    64,942.56x = 89,608.68 × 36,642.78
  4. Step 4: Simplify right side
    64,942.56x = 3,283,511,147.33
  5. Step 5: Solve for x
    x = 3,283,511,147.33/64,942.56
  6. Step 6: Final answer
    x = 50,560.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.