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Finding the Fourth Proportional to 54,541.60, 81,792.14 and 18,993.79

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Solution

The fourth proportional to 54,541.60, 81,792.14 and 18,993.79 is: 28,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,541.60 : 81,792.14 = 18,993.79 : x
  2. Step 2: Convert to fraction form
    54,541.60/81,792.14 = 18,993.79/x
  3. Step 3: Cross multiply
    54,541.60x = 81,792.14 × 18,993.79
  4. Step 4: Simplify right side
    54,541.60x = 1,553,542,431.36
  5. Step 5: Solve for x
    x = 1,553,542,431.36/54,541.60
  6. Step 6: Final answer
    x = 28,483.63

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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.