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Finding the Fourth Proportional to 89,189.40, 133,784.10 and 36,636.60

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Solution

The fourth proportional to 89,189.40, 133,784.10 and 36,636.60 is: 54,954.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,189.40 : 133,784.10 = 36,636.60 : x
  2. Step 2: Convert to fraction form
    89,189.40/133,784.10 = 36,636.60/x
  3. Step 3: Cross multiply
    89,189.40x = 133,784.10 × 36,636.60
  4. Step 4: Simplify right side
    89,189.40x = 4,901,394,558.06
  5. Step 5: Solve for x
    x = 4,901,394,558.06/89,189.40
  6. Step 6: Final answer
    x = 54,954.90

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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.