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Finding the Fourth Proportional to 36,785.78, 50,766.03 and 21,679.07

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Solution

The fourth proportional to 36,785.78, 50,766.03 and 21,679.07 is: 29,918.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,785.78 : 50,766.03 = 21,679.07 : x
  2. Step 2: Convert to fraction form
    36,785.78/50,766.03 = 21,679.07/x
  3. Step 3: Cross multiply
    36,785.78x = 50,766.03 × 21,679.07
  4. Step 4: Simplify right side
    36,785.78x = 1,100,560,064.16
  5. Step 5: Solve for x
    x = 1,100,560,064.16/36,785.78
  6. Step 6: Final answer
    x = 29,918.09

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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.