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Finding the Fourth Proportional to 68,353.92, 102,496.32 and 21,611.52

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Solution

The fourth proportional to 68,353.92, 102,496.32 and 21,611.52 is: 32,406.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,353.92 : 102,496.32 = 21,611.52 : x
  2. Step 2: Convert to fraction form
    68,353.92/102,496.32 = 21,611.52/x
  3. Step 3: Cross multiply
    68,353.92x = 102,496.32 × 21,611.52
  4. Step 4: Simplify right side
    68,353.92x = 2,215,101,269.61
  5. Step 5: Solve for x
    x = 2,215,101,269.61/68,353.92
  6. Step 6: Final answer
    x = 32,406.35

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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.