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Finding the Fourth Proportional to 66,621.96, 91,896.03 and 50,671.44

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Solution

The fourth proportional to 66,621.96, 91,896.03 and 50,671.44 is: 69,894.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,621.96 : 91,896.03 = 50,671.44 : x
  2. Step 2: Convert to fraction form
    66,621.96/91,896.03 = 50,671.44/x
  3. Step 3: Cross multiply
    66,621.96x = 91,896.03 × 50,671.44
  4. Step 4: Simplify right side
    66,621.96x = 4,656,504,170.38
  5. Step 5: Solve for x
    x = 4,656,504,170.38/66,621.96
  6. Step 6: Final answer
    x = 69,894.43

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1.5x scale

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.