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Finding the Fourth Proportional to 68,790.74, 94,940.96 and 38,170.71

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Solution

The fourth proportional to 68,790.74, 94,940.96 and 38,170.71 is: 52,680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,790.74 : 94,940.96 = 38,170.71 : x
  2. Step 2: Convert to fraction form
    68,790.74/94,940.96 = 38,170.71/x
  3. Step 3: Cross multiply
    68,790.74x = 94,940.96 × 38,170.71
  4. Step 4: Simplify right side
    68,790.74x = 3,623,963,660.43
  5. Step 5: Solve for x
    x = 3,623,963,660.43/68,790.74
  6. Step 6: Final answer
    x = 52,680.98

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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.