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Finding the Fourth Proportional to 68,302.76, 102,472.38 and 21,556.52

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Solution

The fourth proportional to 68,302.76, 102,472.38 and 21,556.52 is: 32,340.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,302.76 : 102,472.38 = 21,556.52 : x
  2. Step 2: Convert to fraction form
    68,302.76/102,472.38 = 21,556.52/x
  3. Step 3: Cross multiply
    68,302.76x = 102,472.38 × 21,556.52
  4. Step 4: Simplify right side
    68,302.76x = 2,208,947,908.92
  5. Step 5: Solve for x
    x = 2,208,947,908.92/68,302.76
  6. Step 6: Final answer
    x = 32,340.54

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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.