Home / 54,427.10-81,645.81-21,149.73

Finding the Fourth Proportional to 54,427.10, 81,645.81 and 21,149.73

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Solution

The fourth proportional to 54,427.10, 81,645.81 and 21,149.73 is: 31,726.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,427.10 : 81,645.81 = 21,149.73 : x
  2. Step 2: Convert to fraction form
    54,427.10/81,645.81 = 21,149.73/x
  3. Step 3: Cross multiply
    54,427.10x = 81,645.81 × 21,149.73
  4. Step 4: Simplify right side
    54,427.10x = 1,726,786,837.13
  5. Step 5: Solve for x
    x = 1,726,786,837.13/54,427.10
  6. Step 6: Final answer
    x = 31,726.60

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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.