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Finding the Fourth Proportional to 68,876.50, 103,332.09 and 19,628.50

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Solution

The fourth proportional to 68,876.50, 103,332.09 and 19,628.50 is: 29,447.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,876.50 : 103,332.09 = 19,628.50 : x
  2. Step 2: Convert to fraction form
    68,876.50/103,332.09 = 19,628.50/x
  3. Step 3: Cross multiply
    68,876.50x = 103,332.09 × 19,628.50
  4. Step 4: Simplify right side
    68,876.50x = 2,028,253,928.57
  5. Step 5: Solve for x
    x = 2,028,253,928.57/68,876.50
  6. Step 6: Final answer
    x = 29,447.69

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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.