Home / 81,589.20-122,369.66-22,410.78

Finding the Fourth Proportional to 81,589.20, 122,369.66 and 22,410.78

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Solution

The fourth proportional to 81,589.20, 122,369.66 and 22,410.78 is: 33,612.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,589.20 : 122,369.66 = 22,410.78 : x
  2. Step 2: Convert to fraction form
    81,589.20/122,369.66 = 22,410.78/x
  3. Step 3: Cross multiply
    81,589.20x = 122,369.66 × 22,410.78
  4. Step 4: Simplify right side
    81,589.20x = 2,742,399,528.93
  5. Step 5: Solve for x
    x = 2,742,399,528.93/81,589.20
  6. Step 6: Final answer
    x = 33,612.29

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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.