Home / 54,069.72-81,107.28-20,778.12

Finding the Fourth Proportional to 54,069.72, 81,107.28 and 20,778.12

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Solution

The fourth proportional to 54,069.72, 81,107.28 and 20,778.12 is: 31,168.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,069.72 : 81,107.28 = 20,778.12 : x
  2. Step 2: Convert to fraction form
    54,069.72/81,107.28 = 20,778.12/x
  3. Step 3: Cross multiply
    54,069.72x = 81,107.28 × 20,778.12
  4. Step 4: Simplify right side
    54,069.72x = 1,685,256,796.71
  5. Step 5: Solve for x
    x = 1,685,256,796.71/54,069.72
  6. Step 6: Final answer
    x = 31,168.22

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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.