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Finding the Fourth Proportional to 68,005.96, 102,008.73 and 18,086.01

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Solution

The fourth proportional to 68,005.96, 102,008.73 and 18,086.01 is: 27,128.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,005.96 : 102,008.73 = 18,086.01 : x
  2. Step 2: Convert to fraction form
    68,005.96/102,008.73 = 18,086.01/x
  3. Step 3: Cross multiply
    68,005.96x = 102,008.73 × 18,086.01
  4. Step 4: Simplify right side
    68,005.96x = 1,844,931,169.96
  5. Step 5: Solve for x
    x = 1,844,931,169.96/68,005.96
  6. Step 6: Final answer
    x = 27,128.96

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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.