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Finding the Fourth Proportional to 54,361.76, 81,542.72 and 14,919.36

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Solution

The fourth proportional to 54,361.76, 81,542.72 and 14,919.36 is: 22,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,361.76 : 81,542.72 = 14,919.36 : x
  2. Step 2: Convert to fraction form
    54,361.76/81,542.72 = 14,919.36/x
  3. Step 3: Cross multiply
    54,361.76x = 81,542.72 × 14,919.36
  4. Step 4: Simplify right side
    54,361.76x = 1,216,565,195.06
  5. Step 5: Solve for x
    x = 1,216,565,195.06/54,361.76
  6. Step 6: Final answer
    x = 22,379.06

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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.