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Finding the Fourth Proportional to 54,058.92, 81,057.54 and 20,758.20

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Solution

The fourth proportional to 54,058.92, 81,057.54 and 20,758.20 is: 31,125.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,058.92 : 81,057.54 = 20,758.20 : x
  2. Step 2: Convert to fraction form
    54,058.92/81,057.54 = 20,758.20/x
  3. Step 3: Cross multiply
    54,058.92x = 81,057.54 × 20,758.20
  4. Step 4: Simplify right side
    54,058.92x = 1,682,608,626.83
  5. Step 5: Solve for x
    x = 1,682,608,626.83/54,058.92
  6. Step 6: Final answer
    x = 31,125.46

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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.