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Finding the Fourth Proportional to 68,301.77, 102,452.65 and 18,381.98

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Solution

The fourth proportional to 68,301.77, 102,452.65 and 18,381.98 is: 27,572.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,301.77 : 102,452.65 = 18,381.98 : x
  2. Step 2: Convert to fraction form
    68,301.77/102,452.65 = 18,381.98/x
  3. Step 3: Cross multiply
    68,301.77x = 102,452.65 × 18,381.98
  4. Step 4: Simplify right side
    68,301.77x = 1,883,282,563.25
  5. Step 5: Solve for x
    x = 1,883,282,563.25/68,301.77
  6. Step 6: Final answer
    x = 27,572.97

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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.