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Finding the Fourth Proportional to 68,634.90, 102,990.42 and 33,574.86

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Solution

The fourth proportional to 68,634.90, 102,990.42 and 33,574.86 is: 50,380.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,634.90 : 102,990.42 = 33,574.86 : x
  2. Step 2: Convert to fraction form
    68,634.90/102,990.42 = 33,574.86/x
  3. Step 3: Cross multiply
    68,634.90x = 102,990.42 × 33,574.86
  4. Step 4: Simplify right side
    68,634.90x = 3,457,888,932.84
  5. Step 5: Solve for x
    x = 3,457,888,932.84/68,634.90
  6. Step 6: Final answer
    x = 50,380.91

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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.