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Finding the Fourth Proportional to 68,736, 94,841.28 and 40,444.80

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Solution

The fourth proportional to 68,736, 94,841.28 and 40,444.80 is: 55,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,736 : 94,841.28 = 40,444.80 : x
  2. Step 2: Convert to fraction form
    68,736/94,841.28 = 40,444.80/x
  3. Step 3: Cross multiply
    68,736x = 94,841.28 × 40,444.80
  4. Step 4: Simplify right side
    68,736x = 3,835,836,601.34
  5. Step 5: Solve for x
    x = 3,835,836,601.34/68,736
  6. Step 6: Final answer
    x = 55,805.35

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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.