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Finding the Fourth Proportional to 68,443, 94,451.34 and 38,635

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Solution

The fourth proportional to 68,443, 94,451.34 and 38,635 is: 53,316.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,443 : 94,451.34 = 38,635 : x
  2. Step 2: Convert to fraction form
    68,443/94,451.34 = 38,635/x
  3. Step 3: Cross multiply
    68,443x = 94,451.34 × 38,635
  4. Step 4: Simplify right side
    68,443x = 3,649,127,520.90
  5. Step 5: Solve for x
    x = 3,649,127,520.90/68,443
  6. Step 6: Final answer
    x = 53,316.30

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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.