Home / 54,435.74-81,632.61-21,151.42

Finding the Fourth Proportional to 54,435.74, 81,632.61 and 21,151.42

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Solution

The fourth proportional to 54,435.74, 81,632.61 and 21,151.42 is: 31,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435.74 : 81,632.61 = 21,151.42 : x
  2. Step 2: Convert to fraction form
    54,435.74/81,632.61 = 21,151.42/x
  3. Step 3: Cross multiply
    54,435.74x = 81,632.61 × 21,151.42
  4. Step 4: Simplify right side
    54,435.74x = 1,726,645,415.72
  5. Step 5: Solve for x
    x = 1,726,645,415.72/54,435.74
  6. Step 6: Final answer
    x = 31,718.97

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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.