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Finding the Fourth Proportional to 68,144.72, 94,020.88 and 40,913.80

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Solution

The fourth proportional to 68,144.72, 94,020.88 and 40,913.80 is: 56,449.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,144.72 : 94,020.88 = 40,913.80 : x
  2. Step 2: Convert to fraction form
    68,144.72/94,020.88 = 40,913.80/x
  3. Step 3: Cross multiply
    68,144.72x = 94,020.88 × 40,913.80
  4. Step 4: Simplify right side
    68,144.72x = 3,846,751,480.14
  5. Step 5: Solve for x
    x = 3,846,751,480.14/68,144.72
  6. Step 6: Final answer
    x = 56,449.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.