Home / 54,453.78-81,642.27-21,146.10

Finding the Fourth Proportional to 54,453.78, 81,642.27 and 21,146.10

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Solution

The fourth proportional to 54,453.78, 81,642.27 and 21,146.10 is: 31,704.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,453.78 : 81,642.27 = 21,146.10 : x
  2. Step 2: Convert to fraction form
    54,453.78/81,642.27 = 21,146.10/x
  3. Step 3: Cross multiply
    54,453.78x = 81,642.27 × 21,146.10
  4. Step 4: Simplify right side
    54,453.78x = 1,726,415,605.65
  5. Step 5: Solve for x
    x = 1,726,415,605.65/54,453.78
  6. Step 6: Final answer
    x = 31,704.24

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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.