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Finding the Fourth Proportional to 45,601.33, 68,372.39 and 18,940

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Solution

The fourth proportional to 45,601.33, 68,372.39 and 18,940 is: 28,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,601.33 : 68,372.39 = 18,940 : x
  2. Step 2: Convert to fraction form
    45,601.33/68,372.39 = 18,940/x
  3. Step 3: Cross multiply
    45,601.33x = 68,372.39 × 18,940
  4. Step 4: Simplify right side
    45,601.33x = 1,294,972,971.90
  5. Step 5: Solve for x
    x = 1,294,972,971.90/45,601.33
  6. Step 6: Final answer
    x = 28,397.70

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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.