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Finding the Fourth Proportional to 68,645.20, 102,838.20 and 35,251.60

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Solution

The fourth proportional to 68,645.20, 102,838.20 and 35,251.60 is: 52,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,645.20 : 102,838.20 = 35,251.60 : x
  2. Step 2: Convert to fraction form
    68,645.20/102,838.20 = 35,251.60/x
  3. Step 3: Cross multiply
    68,645.20x = 102,838.20 × 35,251.60
  4. Step 4: Simplify right side
    68,645.20x = 3,625,211,091.12
  5. Step 5: Solve for x
    x = 3,625,211,091.12/68,645.20
  6. Step 6: Final answer
    x = 52,810.85

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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.