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Finding the Fourth Proportional to 68,035.92, 102,055.80 and 18,787.92

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Solution

The fourth proportional to 68,035.92, 102,055.80 and 18,787.92 is: 28,182.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,035.92 : 102,055.80 = 18,787.92 : x
  2. Step 2: Convert to fraction form
    68,035.92/102,055.80 = 18,787.92/x
  3. Step 3: Cross multiply
    68,035.92x = 102,055.80 × 18,787.92
  4. Step 4: Simplify right side
    68,035.92x = 1,917,416,205.94
  5. Step 5: Solve for x
    x = 1,917,416,205.94/68,035.92
  6. Step 6: Final answer
    x = 28,182.41

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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.