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Finding the Fourth Proportional to 36,639.20, 54,958.80 and 8,937.20

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Solution

The fourth proportional to 36,639.20, 54,958.80 and 8,937.20 is: 13,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,639.20 : 54,958.80 = 8,937.20 : x
  2. Step 2: Convert to fraction form
    36,639.20/54,958.80 = 8,937.20/x
  3. Step 3: Cross multiply
    36,639.20x = 54,958.80 × 8,937.20
  4. Step 4: Simplify right side
    36,639.20x = 491,177,512.57
  5. Step 5: Solve for x
    x = 491,177,512.57/36,639.20
  6. Step 6: Final answer
    x = 13,405.79

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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.