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Finding the Fourth Proportional to 81,589.32, 122,361.69 and 22,410.90

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Solution

The fourth proportional to 81,589.32, 122,361.69 and 22,410.90 is: 33,610.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,589.32 : 122,361.69 = 22,410.90 : x
  2. Step 2: Convert to fraction form
    81,589.32/122,361.69 = 22,410.90/x
  3. Step 3: Cross multiply
    81,589.32x = 122,361.69 × 22,410.90
  4. Step 4: Simplify right side
    81,589.32x = 2,742,235,598.42
  5. Step 5: Solve for x
    x = 2,742,235,598.42/81,589.32
  6. Step 6: Final answer
    x = 33,610.23

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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.