Home / 54,720.20-82,145.10-54,331.40

Finding the Fourth Proportional to 54,720.20, 82,145.10 and 54,331.40

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Solution

The fourth proportional to 54,720.20, 82,145.10 and 54,331.40 is: 81,561.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,720.20 : 82,145.10 = 54,331.40 : x
  2. Step 2: Convert to fraction form
    54,720.20/82,145.10 = 54,331.40/x
  3. Step 3: Cross multiply
    54,720.20x = 82,145.10 × 54,331.40
  4. Step 4: Simplify right side
    54,720.20x = 4,463,058,286.14
  5. Step 5: Solve for x
    x = 4,463,058,286.14/54,720.20
  6. Step 6: Final answer
    x = 81,561.44

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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.