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Finding the Fourth Proportional to 65,765.43, 90,684.90 and 41,861.52

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Solution

The fourth proportional to 65,765.43, 90,684.90 and 41,861.52 is: 57,723.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,765.43 : 90,684.90 = 41,861.52 : x
  2. Step 2: Convert to fraction form
    65,765.43/90,684.90 = 41,861.52/x
  3. Step 3: Cross multiply
    65,765.43x = 90,684.90 × 41,861.52
  4. Step 4: Simplify right side
    65,765.43x = 3,796,207,755.05
  5. Step 5: Solve for x
    x = 3,796,207,755.05/65,765.43
  6. Step 6: Final answer
    x = 57,723.45

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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.