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Finding the Fourth Proportional to 68,613.94, 94,691.40 and 38,398.64

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Solution

The fourth proportional to 68,613.94, 94,691.40 and 38,398.64 is: 52,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,613.94 : 94,691.40 = 38,398.64 : x
  2. Step 2: Convert to fraction form
    68,613.94/94,691.40 = 38,398.64/x
  3. Step 3: Cross multiply
    68,613.94x = 94,691.40 × 38,398.64
  4. Step 4: Simplify right side
    68,613.94x = 3,636,020,506.24
  5. Step 5: Solve for x
    x = 3,636,020,506.24/68,613.94
  6. Step 6: Final answer
    x = 52,992.45

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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.