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Finding the Fourth Proportional to 68,084.88, 93,954.11 and 39,399.95

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Solution

The fourth proportional to 68,084.88, 93,954.11 and 39,399.95 is: 54,370.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,084.88 : 93,954.11 = 39,399.95 : x
  2. Step 2: Convert to fraction form
    68,084.88/93,954.11 = 39,399.95/x
  3. Step 3: Cross multiply
    68,084.88x = 93,954.11 × 39,399.95
  4. Step 4: Simplify right side
    68,084.88x = 3,701,786,569.52
  5. Step 5: Solve for x
    x = 3,701,786,569.52/68,084.88
  6. Step 6: Final answer
    x = 54,370.17

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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.