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Finding the Fourth Proportional to 40,404.78, 60,616.86 and 12,702.78

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Solution

The fourth proportional to 40,404.78, 60,616.86 and 12,702.78 is: 19,057.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,404.78 : 60,616.86 = 12,702.78 : x
  2. Step 2: Convert to fraction form
    40,404.78/60,616.86 = 12,702.78/x
  3. Step 3: Cross multiply
    40,404.78x = 60,616.86 × 12,702.78
  4. Step 4: Simplify right side
    40,404.78x = 770,002,636.87
  5. Step 5: Solve for x
    x = 770,002,636.87/40,404.78
  6. Step 6: Final answer
    x = 19,057.22

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1.5x scale

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.