Home / 80,428.20-120,620.70-33,671.40

Finding the Fourth Proportional to 80,428.20, 120,620.70 and 33,671.40

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Solution

The fourth proportional to 80,428.20, 120,620.70 and 33,671.40 is: 50,498.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,428.20 : 120,620.70 = 33,671.40 : x
  2. Step 2: Convert to fraction form
    80,428.20/120,620.70 = 33,671.40/x
  3. Step 3: Cross multiply
    80,428.20x = 120,620.70 × 33,671.40
  4. Step 4: Simplify right side
    80,428.20x = 4,061,467,837.98
  5. Step 5: Solve for x
    x = 4,061,467,837.98/80,428.20
  6. Step 6: Final answer
    x = 50,498.06

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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.