Home / 54,121.75-81,111.35-22,918.39

Finding the Fourth Proportional to 54,121.75, 81,111.35 and 22,918.39

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Solution

The fourth proportional to 54,121.75, 81,111.35 and 22,918.39 is: 34,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,121.75 : 81,111.35 = 22,918.39 : x
  2. Step 2: Convert to fraction form
    54,121.75/81,111.35 = 22,918.39/x
  3. Step 3: Cross multiply
    54,121.75x = 81,111.35 × 22,918.39
  4. Step 4: Simplify right side
    54,121.75x = 1,858,941,438.13
  5. Step 5: Solve for x
    x = 1,858,941,438.13/54,121.75
  6. Step 6: Final answer
    x = 34,347.40

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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.