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Finding the Fourth Proportional to 68,893.92, 95,072.80 and 38,678.48

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Solution

The fourth proportional to 68,893.92, 95,072.80 and 38,678.48 is: 53,375.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,893.92 : 95,072.80 = 38,678.48 : x
  2. Step 2: Convert to fraction form
    68,893.92/95,072.80 = 38,678.48/x
  3. Step 3: Cross multiply
    68,893.92x = 95,072.80 × 38,678.48
  4. Step 4: Simplify right side
    68,893.92x = 3,677,271,393.34
  5. Step 5: Solve for x
    x = 3,677,271,393.34/68,893.92
  6. Step 6: Final answer
    x = 53,375.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.