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Finding the Fourth Proportional to 68,696.92, 102,893.12 and 52,784.80

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Solution

The fourth proportional to 68,696.92, 102,893.12 and 52,784.80 is: 79,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,696.92 : 102,893.12 = 52,784.80 : x
  2. Step 2: Convert to fraction form
    68,696.92/102,893.12 = 52,784.80/x
  3. Step 3: Cross multiply
    68,696.92x = 102,893.12 × 52,784.80
  4. Step 4: Simplify right side
    68,696.92x = 5,431,192,760.58
  5. Step 5: Solve for x
    x = 5,431,192,760.58/68,696.92
  6. Step 6: Final answer
    x = 79,060.21

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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.