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Finding the Fourth Proportional to 80,487.80, 120,746.10 and 33,745.40

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Solution

The fourth proportional to 80,487.80, 120,746.10 and 33,745.40 is: 50,624.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,487.80 : 120,746.10 = 33,745.40 : x
  2. Step 2: Convert to fraction form
    80,487.80/120,746.10 = 33,745.40/x
  3. Step 3: Cross multiply
    80,487.80x = 120,746.10 × 33,745.40
  4. Step 4: Simplify right side
    80,487.80x = 4,074,625,442.94
  5. Step 5: Solve for x
    x = 4,074,625,442.94/80,487.80
  6. Step 6: Final answer
    x = 50,624.14

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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.