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Finding the Fourth Proportional to 69,912.44, 104,340.47 and 65,172.11

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Solution

The fourth proportional to 69,912.44, 104,340.47 and 65,172.11 is: 97,265.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,912.44 : 104,340.47 = 65,172.11 : x
  2. Step 2: Convert to fraction form
    69,912.44/104,340.47 = 65,172.11/x
  3. Step 3: Cross multiply
    69,912.44x = 104,340.47 × 65,172.11
  4. Step 4: Simplify right side
    69,912.44x = 6,800,087,740.73
  5. Step 5: Solve for x
    x = 6,800,087,740.73/69,912.44
  6. Step 6: Final answer
    x = 97,265.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.