Home / 54,455.14-81,687.75-21,177.71

Finding the Fourth Proportional to 54,455.14, 81,687.75 and 21,177.71

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Solution

The fourth proportional to 54,455.14, 81,687.75 and 21,177.71 is: 31,768.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,455.14 : 81,687.75 = 21,177.71 : x
  2. Step 2: Convert to fraction form
    54,455.14/81,687.75 = 21,177.71/x
  3. Step 3: Cross multiply
    54,455.14x = 81,687.75 × 21,177.71
  4. Step 4: Simplify right side
    54,455.14x = 1,729,959,071.61
  5. Step 5: Solve for x
    x = 1,729,959,071.61/54,455.14
  6. Step 6: Final answer
    x = 31,768.52

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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.