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Finding the Fourth Proportional to 40,680.92, 61,027.19 and 12,603.19

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Solution

The fourth proportional to 40,680.92, 61,027.19 and 12,603.19 is: 18,906.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,680.92 : 61,027.19 = 12,603.19 : x
  2. Step 2: Convert to fraction form
    40,680.92/61,027.19 = 12,603.19/x
  3. Step 3: Cross multiply
    40,680.92x = 61,027.19 × 12,603.19
  4. Step 4: Simplify right side
    40,680.92x = 769,137,055.15
  5. Step 5: Solve for x
    x = 769,137,055.15/40,680.92
  6. Step 6: Final answer
    x = 18,906.58

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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.