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Finding the Fourth Proportional to 49,974.84, 68,964.03 and 28,765.80

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Solution

The fourth proportional to 49,974.84, 68,964.03 and 28,765.80 is: 39,696.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,974.84 : 68,964.03 = 28,765.80 : x
  2. Step 2: Convert to fraction form
    49,974.84/68,964.03 = 28,765.80/x
  3. Step 3: Cross multiply
    49,974.84x = 68,964.03 × 28,765.80
  4. Step 4: Simplify right side
    49,974.84x = 1,983,805,494.17
  5. Step 5: Solve for x
    x = 1,983,805,494.17/49,974.84
  6. Step 6: Final answer
    x = 39,696.08

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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.