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Finding the Fourth Proportional to 45,940.10, 68,906.10 and 12,657.20

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Solution

The fourth proportional to 45,940.10, 68,906.10 and 12,657.20 is: 18,984.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,940.10 : 68,906.10 = 12,657.20 : x
  2. Step 2: Convert to fraction form
    45,940.10/68,906.10 = 12,657.20/x
  3. Step 3: Cross multiply
    45,940.10x = 68,906.10 × 12,657.20
  4. Step 4: Simplify right side
    45,940.10x = 872,158,288.92
  5. Step 5: Solve for x
    x = 872,158,288.92/45,940.10
  6. Step 6: Final answer
    x = 18,984.68

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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.