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Finding the Fourth Proportional to 68,381.99, 102,753.38 and 36,815.39

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Solution

The fourth proportional to 68,381.99, 102,753.38 and 36,815.39 is: 55,320.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,381.99 : 102,753.38 = 36,815.39 : x
  2. Step 2: Convert to fraction form
    68,381.99/102,753.38 = 36,815.39/x
  3. Step 3: Cross multiply
    68,381.99x = 102,753.38 × 36,815.39
  4. Step 4: Simplify right side
    68,381.99x = 3,782,905,336.79
  5. Step 5: Solve for x
    x = 3,782,905,336.79/68,381.99
  6. Step 6: Final answer
    x = 55,320.20

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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.