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Finding the Fourth Proportional to 69,903.06, 96,469.62 and 39,687.81

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Solution

The fourth proportional to 69,903.06, 96,469.62 and 39,687.81 is: 54,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,903.06 : 96,469.62 = 39,687.81 : x
  2. Step 2: Convert to fraction form
    69,903.06/96,469.62 = 39,687.81/x
  3. Step 3: Cross multiply
    69,903.06x = 96,469.62 × 39,687.81
  4. Step 4: Simplify right side
    69,903.06x = 3,828,667,949.33
  5. Step 5: Solve for x
    x = 3,828,667,949.33/69,903.06
  6. Step 6: Final answer
    x = 54,771.11

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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.