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Finding the Fourth Proportional to 68,046.71, 93,874.16 and 39,739.91

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Solution

The fourth proportional to 68,046.71, 93,874.16 and 39,739.91 is: 54,823.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,046.71 : 93,874.16 = 39,739.91 : x
  2. Step 2: Convert to fraction form
    68,046.71/93,874.16 = 39,739.91/x
  3. Step 3: Cross multiply
    68,046.71x = 93,874.16 × 39,739.91
  4. Step 4: Simplify right side
    68,046.71x = 3,730,550,471.03
  5. Step 5: Solve for x
    x = 3,730,550,471.03/68,046.71
  6. Step 6: Final answer
    x = 54,823.38

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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.