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Finding the Fourth Proportional to 51,244, 70,716.72 and 28,888

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Solution

The fourth proportional to 51,244, 70,716.72 and 28,888 is: 39,865.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,244 : 70,716.72 = 28,888 : x
  2. Step 2: Convert to fraction form
    51,244/70,716.72 = 28,888/x
  3. Step 3: Cross multiply
    51,244x = 70,716.72 × 28,888
  4. Step 4: Simplify right side
    51,244x = 2,042,864,607.36
  5. Step 5: Solve for x
    x = 2,042,864,607.36/51,244
  6. Step 6: Final answer
    x = 39,865.44

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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.