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Finding the Fourth Proportional to 66,620.46, 91,893.96 and 50,669.94

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Solution

The fourth proportional to 66,620.46, 91,893.96 and 50,669.94 is: 69,892.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,620.46 : 91,893.96 = 50,669.94 : x
  2. Step 2: Convert to fraction form
    66,620.46/91,893.96 = 50,669.94/x
  3. Step 3: Cross multiply
    66,620.46x = 91,893.96 × 50,669.94
  4. Step 4: Simplify right side
    66,620.46x = 4,656,261,439.56
  5. Step 5: Solve for x
    x = 4,656,261,439.56/66,620.46
  6. Step 6: Final answer
    x = 69,892.36

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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.