Home / 54,419.57-81,608.35-21,135.14

Finding the Fourth Proportional to 54,419.57, 81,608.35 and 21,135.14

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Solution

The fourth proportional to 54,419.57, 81,608.35 and 21,135.14 is: 31,694.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,419.57 : 81,608.35 = 21,135.14 : x
  2. Step 2: Convert to fraction form
    54,419.57/81,608.35 = 21,135.14/x
  3. Step 3: Cross multiply
    54,419.57x = 81,608.35 × 21,135.14
  4. Step 4: Simplify right side
    54,419.57x = 1,724,804,053.60
  5. Step 5: Solve for x
    x = 1,724,804,053.60/54,419.57
  6. Step 6: Final answer
    x = 31,694.55

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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.