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Finding the Fourth Proportional to 68,489.91, 94,515.80 and 38,275.22

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Solution

The fourth proportional to 68,489.91, 94,515.80 and 38,275.22 is: 52,819.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,489.91 : 94,515.80 = 38,275.22 : x
  2. Step 2: Convert to fraction form
    68,489.91/94,515.80 = 38,275.22/x
  3. Step 3: Cross multiply
    68,489.91x = 94,515.80 × 38,275.22
  4. Step 4: Simplify right side
    68,489.91x = 3,617,613,083.39
  5. Step 5: Solve for x
    x = 3,617,613,083.39/68,489.91
  6. Step 6: Final answer
    x = 52,819.65

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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.