Home / 80,285,382.90-120,428,179.79-21,993,579.09

Finding the Fourth Proportional to 80,285,382.90, 120,428,179.79 and 21,993,579.09

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Solution

The fourth proportional to 80,285,382.90, 120,428,179.79 and 21,993,579.09 is: 32,990,397.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,285,382.90 : 120,428,179.79 = 21,993,579.09 : x
  2. Step 2: Convert to fraction form
    80,285,382.90/120,428,179.79 = 21,993,579.09/x
  3. Step 3: Cross multiply
    80,285,382.90x = 120,428,179.79 × 21,993,579.09
  4. Step 4: Simplify right side
    80,285,382.90x = 2,648,646,696,766,136.50
  5. Step 5: Solve for x
    x = 2,648,646,696,766,136.50/80,285,382.90
  6. Step 6: Final answer
    x = 32,990,397.52

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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.