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Finding the Fourth Proportional to 40,408.88, 60,611.90 and 12,327.80

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Solution

The fourth proportional to 40,408.88, 60,611.90 and 12,327.80 is: 18,491.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,408.88 : 60,611.90 = 12,327.80 : x
  2. Step 2: Convert to fraction form
    40,408.88/60,611.90 = 12,327.80/x
  3. Step 3: Cross multiply
    40,408.88x = 60,611.90 × 12,327.80
  4. Step 4: Simplify right side
    40,408.88x = 747,211,016.12
  5. Step 5: Solve for x
    x = 747,211,016.12/40,408.88
  6. Step 6: Final answer
    x = 18,491.26

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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.