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Finding the Fourth Proportional to 68,366.50, 102,536.78 and 28,951.29

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Solution

The fourth proportional to 68,366.50, 102,536.78 and 28,951.29 is: 43,421.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,366.50 : 102,536.78 = 28,951.29 : x
  2. Step 2: Convert to fraction form
    68,366.50/102,536.78 = 28,951.29/x
  3. Step 3: Cross multiply
    68,366.50x = 102,536.78 × 28,951.29
  4. Step 4: Simplify right side
    68,366.50x = 2,968,571,908.69
  5. Step 5: Solve for x
    x = 2,968,571,908.69/68,366.50
  6. Step 6: Final answer
    x = 43,421.44

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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.