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Finding the Fourth Proportional to 36,118.40, 54,134.40 and 18,579.20

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Solution

The fourth proportional to 36,118.40, 54,134.40 and 18,579.20 is: 27,846.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,118.40 : 54,134.40 = 18,579.20 : x
  2. Step 2: Convert to fraction form
    36,118.40/54,134.40 = 18,579.20/x
  3. Step 3: Cross multiply
    36,118.40x = 54,134.40 × 18,579.20
  4. Step 4: Simplify right side
    36,118.40x = 1,005,773,844.48
  5. Step 5: Solve for x
    x = 1,005,773,844.48/36,118.40
  6. Step 6: Final answer
    x = 27,846.58

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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.