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Finding the Fourth Proportional to 103,354.36, 155,020.60 and 33,228.28

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Solution

The fourth proportional to 103,354.36, 155,020.60 and 33,228.28 is: 49,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,354.36 : 155,020.60 = 33,228.28 : x
  2. Step 2: Convert to fraction form
    103,354.36/155,020.60 = 33,228.28/x
  3. Step 3: Cross multiply
    103,354.36x = 155,020.60 × 33,228.28
  4. Step 4: Simplify right side
    103,354.36x = 5,151,067,902.57
  5. Step 5: Solve for x
    x = 5,151,067,902.57/103,354.36
  6. Step 6: Final answer
    x = 49,838.90

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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.