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Finding the Fourth Proportional to 89,190.20, 133,671.90 and 36,540.20

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Solution

The fourth proportional to 89,190.20, 133,671.90 and 36,540.20 is: 54,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,190.20 : 133,671.90 = 36,540.20 : x
  2. Step 2: Convert to fraction form
    89,190.20/133,671.90 = 36,540.20/x
  3. Step 3: Cross multiply
    89,190.20x = 133,671.90 × 36,540.20
  4. Step 4: Simplify right side
    89,190.20x = 4,884,397,960.38
  5. Step 5: Solve for x
    x = 4,884,397,960.38/89,190.20
  6. Step 6: Final answer
    x = 54,763.84

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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.