Home / 54,518.01-81,761.21-21,230.65

Finding the Fourth Proportional to 54,518.01, 81,761.21 and 21,230.65

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Solution

The fourth proportional to 54,518.01, 81,761.21 and 21,230.65 is: 31,839.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,518.01 : 81,761.21 = 21,230.65 : x
  2. Step 2: Convert to fraction form
    54,518.01/81,761.21 = 21,230.65/x
  3. Step 3: Cross multiply
    54,518.01x = 81,761.21 × 21,230.65
  4. Step 4: Simplify right side
    54,518.01x = 1,735,843,633.09
  5. Step 5: Solve for x
    x = 1,735,843,633.09/54,518.01
  6. Step 6: Final answer
    x = 31,839.82

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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.