Home / 54,454.68-81,703.14-21,198.12

Finding the Fourth Proportional to 54,454.68, 81,703.14 and 21,198.12

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Solution

The fourth proportional to 54,454.68, 81,703.14 and 21,198.12 is: 31,805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,454.68 : 81,703.14 = 21,198.12 : x
  2. Step 2: Convert to fraction form
    54,454.68/81,703.14 = 21,198.12/x
  3. Step 3: Cross multiply
    54,454.68x = 81,703.14 × 21,198.12
  4. Step 4: Simplify right side
    54,454.68x = 1,731,952,966.10
  5. Step 5: Solve for x
    x = 1,731,952,966.10/54,454.68
  6. Step 6: Final answer
    x = 31,805.40

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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.