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Finding the Fourth Proportional to 40,418.60, 60,627.90 and 12,716.60

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Solution

The fourth proportional to 40,418.60, 60,627.90 and 12,716.60 is: 19,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,418.60 : 60,627.90 = 12,716.60 : x
  2. Step 2: Convert to fraction form
    40,418.60/60,627.90 = 12,716.60/x
  3. Step 3: Cross multiply
    40,418.60x = 60,627.90 × 12,716.60
  4. Step 4: Simplify right side
    40,418.60x = 770,980,753.14
  5. Step 5: Solve for x
    x = 770,980,753.14/40,418.60
  6. Step 6: Final answer
    x = 19,074.90

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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.