Home / 54,442.12-81,655.84-21,159

Finding the Fourth Proportional to 54,442.12, 81,655.84 and 21,159

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Solution

The fourth proportional to 54,442.12, 81,655.84 and 21,159 is: 31,735.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,442.12 : 81,655.84 = 21,159 : x
  2. Step 2: Convert to fraction form
    54,442.12/81,655.84 = 21,159/x
  3. Step 3: Cross multiply
    54,442.12x = 81,655.84 × 21,159
  4. Step 4: Simplify right side
    54,442.12x = 1,727,755,918.56
  5. Step 5: Solve for x
    x = 1,727,755,918.56/54,442.12
  6. Step 6: Final answer
    x = 31,735.65

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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.