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Finding the Fourth Proportional to 89,279.80, 133,919.70 and 36,662.20

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Solution

The fourth proportional to 89,279.80, 133,919.70 and 36,662.20 is: 54,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,279.80 : 133,919.70 = 36,662.20 : x
  2. Step 2: Convert to fraction form
    89,279.80/133,919.70 = 36,662.20/x
  3. Step 3: Cross multiply
    89,279.80x = 133,919.70 × 36,662.20
  4. Step 4: Simplify right side
    89,279.80x = 4,909,790,825.34
  5. Step 5: Solve for x
    x = 4,909,790,825.34/89,279.80
  6. Step 6: Final answer
    x = 54,993.30

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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.