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Finding the Fourth Proportional to 45,385.97, 68,078.95 and 13,796.29

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Solution

The fourth proportional to 45,385.97, 68,078.95 and 13,796.29 is: 20,694.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,385.97 : 68,078.95 = 13,796.29 : x
  2. Step 2: Convert to fraction form
    45,385.97/68,078.95 = 13,796.29/x
  3. Step 3: Cross multiply
    45,385.97x = 68,078.95 × 13,796.29
  4. Step 4: Simplify right side
    45,385.97x = 939,236,732.41
  5. Step 5: Solve for x
    x = 939,236,732.41/45,385.97
  6. Step 6: Final answer
    x = 20,694.43

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.