Home / 66,471.38-91,761.10-57,360.50

Finding the Fourth Proportional to 66,471.38, 91,761.10 and 57,360.50

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Solution

The fourth proportional to 66,471.38, 91,761.10 and 57,360.50 is: 79,183.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,471.38 : 91,761.10 = 57,360.50 : x
  2. Step 2: Convert to fraction form
    66,471.38/91,761.10 = 57,360.50/x
  3. Step 3: Cross multiply
    66,471.38x = 91,761.10 × 57,360.50
  4. Step 4: Simplify right side
    66,471.38x = 5,263,462,576.55
  5. Step 5: Solve for x
    x = 5,263,462,576.55/66,471.38
  6. Step 6: Final answer
    x = 79,183.89

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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.