Home / 80,469,954.88-120,703,752.24-19,885,681.60

Finding the Fourth Proportional to 80,469,954.88, 120,703,752.24 and 19,885,681.60

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Solution

The fourth proportional to 80,469,954.88, 120,703,752.24 and 19,885,681.60 is: 29,828,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,469,954.88 : 120,703,752.24 = 19,885,681.60 : x
  2. Step 2: Convert to fraction form
    80,469,954.88/120,703,752.24 = 19,885,681.60/x
  3. Step 3: Cross multiply
    80,469,954.88x = 120,703,752.24 × 19,885,681.60
  4. Step 4: Simplify right side
    80,469,954.88x = 2,400,276,384,969,927
  5. Step 5: Solve for x
    x = 2,400,276,384,969,927/80,469,954.88
  6. Step 6: Final answer
    x = 29,828,230.78

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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.