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Finding the Fourth Proportional to 89,161.78, 133,721.45 and 35,853.89

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Solution

The fourth proportional to 89,161.78, 133,721.45 and 35,853.89 is: 53,772.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,161.78 : 133,721.45 = 35,853.89 : x
  2. Step 2: Convert to fraction form
    89,161.78/133,721.45 = 35,853.89/x
  3. Step 3: Cross multiply
    89,161.78x = 133,721.45 × 35,853.89
  4. Step 4: Simplify right side
    89,161.78x = 4,794,434,158.94
  5. Step 5: Solve for x
    x = 4,794,434,158.94/89,161.78
  6. Step 6: Final answer
    x = 53,772.30

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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.