Home / 54,615.28-81,972.24-45,786.64

Finding the Fourth Proportional to 54,615.28, 81,972.24 and 45,786.64

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Solution

The fourth proportional to 54,615.28, 81,972.24 and 45,786.64 is: 68,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,615.28 : 81,972.24 = 45,786.64 : x
  2. Step 2: Convert to fraction form
    54,615.28/81,972.24 = 45,786.64/x
  3. Step 3: Cross multiply
    54,615.28x = 81,972.24 × 45,786.64
  4. Step 4: Simplify right side
    54,615.28x = 3,753,233,442.87
  5. Step 5: Solve for x
    x = 3,753,233,442.87/54,615.28
  6. Step 6: Final answer
    x = 68,721.31

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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.