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Finding the Fourth Proportional to 30,348.78, 45,481.02 and 17,876.94

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Solution

The fourth proportional to 30,348.78, 45,481.02 and 17,876.94 is: 26,790.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348.78 : 45,481.02 = 17,876.94 : x
  2. Step 2: Convert to fraction form
    30,348.78/45,481.02 = 17,876.94/x
  3. Step 3: Cross multiply
    30,348.78x = 45,481.02 × 17,876.94
  4. Step 4: Simplify right side
    30,348.78x = 813,061,465.68
  5. Step 5: Solve for x
    x = 813,061,465.68/30,348.78
  6. Step 6: Final answer
    x = 26,790.58

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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.