Home / 54,043.11-81,009.24-20,754.21

Finding the Fourth Proportional to 54,043.11, 81,009.24 and 20,754.21

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Solution

The fourth proportional to 54,043.11, 81,009.24 and 20,754.21 is: 31,110.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,043.11 : 81,009.24 = 20,754.21 : x
  2. Step 2: Convert to fraction form
    54,043.11/81,009.24 = 20,754.21/x
  3. Step 3: Cross multiply
    54,043.11x = 81,009.24 × 20,754.21
  4. Step 4: Simplify right side
    54,043.11x = 1,681,282,778.90
  5. Step 5: Solve for x
    x = 1,681,282,778.90/54,043.11
  6. Step 6: Final answer
    x = 31,110.03

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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.