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Finding the Fourth Proportional to 68,083.38, 93,952.04 and 39,398.45

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Solution

The fourth proportional to 68,083.38, 93,952.04 and 39,398.45 is: 54,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,083.38 : 93,952.04 = 39,398.45 : x
  2. Step 2: Convert to fraction form
    68,083.38/93,952.04 = 39,398.45/x
  3. Step 3: Cross multiply
    68,083.38x = 93,952.04 × 39,398.45
  4. Step 4: Simplify right side
    68,083.38x = 3,701,564,083.59
  5. Step 5: Solve for x
    x = 3,701,564,083.59/68,083.38
  6. Step 6: Final answer
    x = 54,368.10

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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.