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Finding the Fourth Proportional to 49,886.73, 68,855.49 and 28,678.32

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Solution

The fourth proportional to 49,886.73, 68,855.49 and 28,678.32 is: 39,582.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,886.73 : 68,855.49 = 28,678.32 : x
  2. Step 2: Convert to fraction form
    49,886.73/68,855.49 = 28,678.32/x
  3. Step 3: Cross multiply
    49,886.73x = 68,855.49 × 28,678.32
  4. Step 4: Simplify right side
    49,886.73x = 1,974,659,775.98
  5. Step 5: Solve for x
    x = 1,974,659,775.98/49,886.73
  6. Step 6: Final answer
    x = 39,582.87

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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.