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Finding the Fourth Proportional to 40,446, 60,680.97 and 20,738.39

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Solution

The fourth proportional to 40,446, 60,680.97 and 20,738.39 is: 31,113.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,446 : 60,680.97 = 20,738.39 : x
  2. Step 2: Convert to fraction form
    40,446/60,680.97 = 20,738.39/x
  3. Step 3: Cross multiply
    40,446x = 60,680.97 × 20,738.39
  4. Step 4: Simplify right side
    40,446x = 1,258,425,318.03
  5. Step 5: Solve for x
    x = 1,258,425,318.03/40,446
  6. Step 6: Final answer
    x = 31,113.72

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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.