Home / 68,272.20-102,408.30-21,529.80

Finding the Fourth Proportional to 68,272.20, 102,408.30 and 21,529.80

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Solution

The fourth proportional to 68,272.20, 102,408.30 and 21,529.80 is: 32,294.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,272.20 : 102,408.30 = 21,529.80 : x
  2. Step 2: Convert to fraction form
    68,272.20/102,408.30 = 21,529.80/x
  3. Step 3: Cross multiply
    68,272.20x = 102,408.30 × 21,529.80
  4. Step 4: Simplify right side
    68,272.20x = 2,204,830,217.34
  5. Step 5: Solve for x
    x = 2,204,830,217.34/68,272.20
  6. Step 6: Final answer
    x = 32,294.70

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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.