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Finding the Fourth Proportional to 68,336.20, 102,518.70 and 21,593.80

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Solution

The fourth proportional to 68,336.20, 102,518.70 and 21,593.80 is: 32,395.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,336.20 : 102,518.70 = 21,593.80 : x
  2. Step 2: Convert to fraction form
    68,336.20/102,518.70 = 21,593.80/x
  3. Step 3: Cross multiply
    68,336.20x = 102,518.70 × 21,593.80
  4. Step 4: Simplify right side
    68,336.20x = 2,213,768,304.06
  5. Step 5: Solve for x
    x = 2,213,768,304.06/68,336.20
  6. Step 6: Final answer
    x = 32,395.25

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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.