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Finding the Fourth Proportional to 54,054.88, 81,055.10 and 18,018.58

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Solution

The fourth proportional to 54,054.88, 81,055.10 and 18,018.58 is: 27,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,054.88 : 81,055.10 = 18,018.58 : x
  2. Step 2: Convert to fraction form
    54,054.88/81,055.10 = 18,018.58/x
  3. Step 3: Cross multiply
    54,054.88x = 81,055.10 × 18,018.58
  4. Step 4: Simplify right side
    54,054.88x = 1,460,497,848.80
  5. Step 5: Solve for x
    x = 1,460,497,848.80/54,054.88
  6. Step 6: Final answer
    x = 27,018.80

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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.