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Finding the Fourth Proportional to 36,102.78, 49,801.83 and 20,993.79

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Solution

The fourth proportional to 36,102.78, 49,801.83 and 20,993.79 is: 28,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,102.78 : 49,801.83 = 20,993.79 : x
  2. Step 2: Convert to fraction form
    36,102.78/49,801.83 = 20,993.79/x
  3. Step 3: Cross multiply
    36,102.78x = 49,801.83 × 20,993.79
  4. Step 4: Simplify right side
    36,102.78x = 1,045,529,160.64
  5. Step 5: Solve for x
    x = 1,045,529,160.64/36,102.78
  6. Step 6: Final answer
    x = 28,959.80

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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.