Home / 82,207.62-123,311.49-19,878.18

Finding the Fourth Proportional to 82,207.62, 123,311.49 and 19,878.18

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Solution

The fourth proportional to 82,207.62, 123,311.49 and 19,878.18 is: 29,817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,207.62 : 123,311.49 = 19,878.18 : x
  2. Step 2: Convert to fraction form
    82,207.62/123,311.49 = 19,878.18/x
  3. Step 3: Cross multiply
    82,207.62x = 123,311.49 × 19,878.18
  4. Step 4: Simplify right side
    82,207.62x = 2,451,207,994.29
  5. Step 5: Solve for x
    x = 2,451,207,994.29/82,207.62
  6. Step 6: Final answer
    x = 29,817.28

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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.