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Finding the Fourth Proportional to 103,791.78, 155,709.54 and 33,665.63

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Solution

The fourth proportional to 103,791.78, 155,709.54 and 33,665.63 is: 50,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,791.78 : 155,709.54 = 33,665.63 : x
  2. Step 2: Convert to fraction form
    103,791.78/155,709.54 = 33,665.63/x
  3. Step 3: Cross multiply
    103,791.78x = 155,709.54 × 33,665.63
  4. Step 4: Simplify right side
    103,791.78x = 5,242,058,982.56
  5. Step 5: Solve for x
    x = 5,242,058,982.56/103,791.78
  6. Step 6: Final answer
    x = 50,505.53

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1.5x scale

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.