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Finding the Fourth Proportional to 54,480.53, 81,720.80 and 19,395.58

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Solution

The fourth proportional to 54,480.53, 81,720.80 and 19,395.58 is: 29,093.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,480.53 : 81,720.80 = 19,395.58 : x
  2. Step 2: Convert to fraction form
    54,480.53/81,720.80 = 19,395.58/x
  3. Step 3: Cross multiply
    54,480.53x = 81,720.80 × 19,395.58
  4. Step 4: Simplify right side
    54,480.53x = 1,585,022,314.06
  5. Step 5: Solve for x
    x = 1,585,022,314.06/54,480.53
  6. Step 6: Final answer
    x = 29,093.37

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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.