Home / 54,387.44-81,594.12-21,108.32

Finding the Fourth Proportional to 54,387.44, 81,594.12 and 21,108.32

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Solution

The fourth proportional to 54,387.44, 81,594.12 and 21,108.32 is: 31,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,387.44 : 81,594.12 = 21,108.32 : x
  2. Step 2: Convert to fraction form
    54,387.44/81,594.12 = 21,108.32/x
  3. Step 3: Cross multiply
    54,387.44x = 81,594.12 × 21,108.32
  4. Step 4: Simplify right side
    54,387.44x = 1,722,314,795.08
  5. Step 5: Solve for x
    x = 1,722,314,795.08/54,387.44
  6. Step 6: Final answer
    x = 31,667.51

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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.