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Finding the Fourth Proportional to 54,189.49, 81,179.06 and 39,932.09

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Solution

The fourth proportional to 54,189.49, 81,179.06 and 39,932.09 is: 59,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,189.49 : 81,179.06 = 39,932.09 : x
  2. Step 2: Convert to fraction form
    54,189.49/81,179.06 = 39,932.09/x
  3. Step 3: Cross multiply
    54,189.49x = 81,179.06 × 39,932.09
  4. Step 4: Simplify right side
    54,189.49x = 3,241,649,530.04
  5. Step 5: Solve for x
    x = 3,241,649,530.04/54,189.49
  6. Step 6: Final answer
    x = 59,820.64

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1.5x scale

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.