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Finding the Fourth Proportional to 66,017.70, 98,790 and 57,163.59

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Solution

The fourth proportional to 66,017.70, 98,790 and 57,163.59 is: 85,540.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,017.70 : 98,790 = 57,163.59 : x
  2. Step 2: Convert to fraction form
    66,017.70/98,790 = 57,163.59/x
  3. Step 3: Cross multiply
    66,017.70x = 98,790 × 57,163.59
  4. Step 4: Simplify right side
    66,017.70x = 5,647,191,056.10
  5. Step 5: Solve for x
    x = 5,647,191,056.10/66,017.70
  6. Step 6: Final answer
    x = 85,540.56

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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.