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Finding the Fourth Proportional to 45,408.60, 68,104.80 and 28,738.80

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Solution

The fourth proportional to 45,408.60, 68,104.80 and 28,738.80 is: 43,103.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,408.60 : 68,104.80 = 28,738.80 : x
  2. Step 2: Convert to fraction form
    45,408.60/68,104.80 = 28,738.80/x
  3. Step 3: Cross multiply
    45,408.60x = 68,104.80 × 28,738.80
  4. Step 4: Simplify right side
    45,408.60x = 1,957,250,226.24
  5. Step 5: Solve for x
    x = 1,957,250,226.24/45,408.60
  6. Step 6: Final answer
    x = 43,103.07

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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.