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Finding the Fourth Proportional to 36,447.62, 54,679.10 and 20,660.20

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Solution

The fourth proportional to 36,447.62, 54,679.10 and 20,660.20 is: 30,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,447.62 : 54,679.10 = 20,660.20 : x
  2. Step 2: Convert to fraction form
    36,447.62/54,679.10 = 20,660.20/x
  3. Step 3: Cross multiply
    36,447.62x = 54,679.10 × 20,660.20
  4. Step 4: Simplify right side
    36,447.62x = 1,129,681,141.82
  5. Step 5: Solve for x
    x = 1,129,681,141.82/36,447.62
  6. Step 6: Final answer
    x = 30,994.65

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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.