Home / 54,435.07-81,631.54-21,150.75

Finding the Fourth Proportional to 54,435.07, 81,631.54 and 21,150.75

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Solution

The fourth proportional to 54,435.07, 81,631.54 and 21,150.75 is: 31,717.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435.07 : 81,631.54 = 21,150.75 : x
  2. Step 2: Convert to fraction form
    54,435.07/81,631.54 = 21,150.75/x
  3. Step 3: Cross multiply
    54,435.07x = 81,631.54 × 21,150.75
  4. Step 4: Simplify right side
    54,435.07x = 1,726,568,108.55
  5. Step 5: Solve for x
    x = 1,726,568,108.55/54,435.07
  6. Step 6: Final answer
    x = 31,717.94

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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.