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Finding the Fourth Proportional to 68,013.88, 102,004.62 and 28,571.76

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Solution

The fourth proportional to 68,013.88, 102,004.62 and 28,571.76 is: 42,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,013.88 : 102,004.62 = 28,571.76 : x
  2. Step 2: Convert to fraction form
    68,013.88/102,004.62 = 28,571.76/x
  3. Step 3: Cross multiply
    68,013.88x = 102,004.62 × 28,571.76
  4. Step 4: Simplify right side
    68,013.88x = 2,914,451,521.53
  5. Step 5: Solve for x
    x = 2,914,451,521.53/68,013.88
  6. Step 6: Final answer
    x = 42,850.83

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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.