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Finding the Fourth Proportional to 43,906.47, 65,859.71 and 20,549.31

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Solution

The fourth proportional to 43,906.47, 65,859.71 and 20,549.31 is: 30,823.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,906.47 : 65,859.71 = 20,549.31 : x
  2. Step 2: Convert to fraction form
    43,906.47/65,859.71 = 20,549.31/x
  3. Step 3: Cross multiply
    43,906.47x = 65,859.71 × 20,549.31
  4. Step 4: Simplify right side
    43,906.47x = 1,353,371,494.55
  5. Step 5: Solve for x
    x = 1,353,371,494.55/43,906.47
  6. Step 6: Final answer
    x = 30,823.97

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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.