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Finding the Fourth Proportional to 55,108, 82,662.04 and 18,172

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Solution

The fourth proportional to 55,108, 82,662.04 and 18,172 is: 27,258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,108 : 82,662.04 = 18,172 : x
  2. Step 2: Convert to fraction form
    55,108/82,662.04 = 18,172/x
  3. Step 3: Cross multiply
    55,108x = 82,662.04 × 18,172
  4. Step 4: Simplify right side
    55,108x = 1,502,134,590.88
  5. Step 5: Solve for x
    x = 1,502,134,590.88/55,108
  6. Step 6: Final answer
    x = 27,258.01

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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.