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Finding the Fourth Proportional to 54,033.88, 81,088.88 and 18,976.28

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Solution

The fourth proportional to 54,033.88, 81,088.88 and 18,976.28 is: 28,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,033.88 : 81,088.88 = 18,976.28 : x
  2. Step 2: Convert to fraction form
    54,033.88/81,088.88 = 18,976.28/x
  3. Step 3: Cross multiply
    54,033.88x = 81,088.88 × 18,976.28
  4. Step 4: Simplify right side
    54,033.88x = 1,538,765,291.77
  5. Step 5: Solve for x
    x = 1,538,765,291.77/54,033.88
  6. Step 6: Final answer
    x = 28,477.79

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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.