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Finding the Fourth Proportional to 65,294.67, 90,112.11 and 36,613.88

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Solution

The fourth proportional to 65,294.67, 90,112.11 and 36,613.88 is: 50,530.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,294.67 : 90,112.11 = 36,613.88 : x
  2. Step 2: Convert to fraction form
    65,294.67/90,112.11 = 36,613.88/x
  3. Step 3: Cross multiply
    65,294.67x = 90,112.11 × 36,613.88
  4. Step 4: Simplify right side
    65,294.67x = 3,299,353,531.53
  5. Step 5: Solve for x
    x = 3,299,353,531.53/65,294.67
  6. Step 6: Final answer
    x = 50,530.21

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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.