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Finding the Fourth Proportional to 40,408.80, 60,622.88 and 12,706.80

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Solution

The fourth proportional to 40,408.80, 60,622.88 and 12,706.80 is: 19,063.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,408.80 : 60,622.88 = 12,706.80 : x
  2. Step 2: Convert to fraction form
    40,408.80/60,622.88 = 12,706.80/x
  3. Step 3: Cross multiply
    40,408.80x = 60,622.88 × 12,706.80
  4. Step 4: Simplify right side
    40,408.80x = 770,322,811.58
  5. Step 5: Solve for x
    x = 770,322,811.58/40,408.80
  6. Step 6: Final answer
    x = 19,063.24

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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.