Home / 80,231.73-120,281.99-30,283.38

Finding the Fourth Proportional to 80,231.73, 120,281.99 and 30,283.38

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Solution

The fourth proportional to 80,231.73, 120,281.99 and 30,283.38 is: 45,400.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,231.73 : 120,281.99 = 30,283.38 : x
  2. Step 2: Convert to fraction form
    80,231.73/120,281.99 = 30,283.38/x
  3. Step 3: Cross multiply
    80,231.73x = 120,281.99 × 30,283.38
  4. Step 4: Simplify right side
    80,231.73x = 3,642,545,058.91
  5. Step 5: Solve for x
    x = 3,642,545,058.91/80,231.73
  6. Step 6: Final answer
    x = 45,400.31

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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.