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Finding the Fourth Proportional to 69,193.65, 103,629.54 and 66,796.38

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Solution

The fourth proportional to 69,193.65, 103,629.54 and 66,796.38 is: 100,039.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,193.65 : 103,629.54 = 66,796.38 : x
  2. Step 2: Convert to fraction form
    69,193.65/103,629.54 = 66,796.38/x
  3. Step 3: Cross multiply
    69,193.65x = 103,629.54 × 66,796.38
  4. Step 4: Simplify right side
    69,193.65x = 6,922,078,133.07
  5. Step 5: Solve for x
    x = 6,922,078,133.07/69,193.65
  6. Step 6: Final answer
    x = 100,039.21

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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.