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Finding the Fourth Proportional to 68,609.10, 94,684.95 and 38,397.90

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Solution

The fourth proportional to 68,609.10, 94,684.95 and 38,397.90 is: 52,991.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,609.10 : 94,684.95 = 38,397.90 : x
  2. Step 2: Convert to fraction form
    68,609.10/94,684.95 = 38,397.90/x
  3. Step 3: Cross multiply
    68,609.10x = 94,684.95 × 38,397.90
  4. Step 4: Simplify right side
    68,609.10x = 3,635,703,241.61
  5. Step 5: Solve for x
    x = 3,635,703,241.61/68,609.10
  6. Step 6: Final answer
    x = 52,991.56

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1.5x scale

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.