Home / 66,620.05-91,872.13-43,615.54

Finding the Fourth Proportional to 66,620.05, 91,872.13 and 43,615.54

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Solution

The fourth proportional to 66,620.05, 91,872.13 and 43,615.54 is: 60,147.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,620.05 : 91,872.13 = 43,615.54 : x
  2. Step 2: Convert to fraction form
    66,620.05/91,872.13 = 43,615.54/x
  3. Step 3: Cross multiply
    66,620.05x = 91,872.13 × 43,615.54
  4. Step 4: Simplify right side
    66,620.05x = 4,007,052,560.90
  5. Step 5: Solve for x
    x = 4,007,052,560.90/66,620.05
  6. Step 6: Final answer
    x = 60,147.85

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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.