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Finding the Fourth Proportional to 68,809.20, 103,145.76 and 33,204.88

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Solution

The fourth proportional to 68,809.20, 103,145.76 and 33,204.88 is: 49,774.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,809.20 : 103,145.76 = 33,204.88 : x
  2. Step 2: Convert to fraction form
    68,809.20/103,145.76 = 33,204.88/x
  3. Step 3: Cross multiply
    68,809.20x = 103,145.76 × 33,204.88
  4. Step 4: Simplify right side
    68,809.20x = 3,424,942,583.31
  5. Step 5: Solve for x
    x = 3,424,942,583.31/68,809.20
  6. Step 6: Final answer
    x = 49,774.49

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1.5x scale

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.