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Finding the Fourth Proportional to 66,662.72, 99,944.28 and 40,361.12

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Solution

The fourth proportional to 66,662.72, 99,944.28 and 40,361.12 is: 60,511.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,662.72 : 99,944.28 = 40,361.12 : x
  2. Step 2: Convert to fraction form
    66,662.72/99,944.28 = 40,361.12/x
  3. Step 3: Cross multiply
    66,662.72x = 99,944.28 × 40,361.12
  4. Step 4: Simplify right side
    66,662.72x = 4,033,863,078.39
  5. Step 5: Solve for x
    x = 4,033,863,078.39/66,662.72
  6. Step 6: Final answer
    x = 60,511.53

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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.