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Finding the Fourth Proportional to 45,652.80, 68,446.80 and 20,704.80

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Solution

The fourth proportional to 45,652.80, 68,446.80 and 20,704.80 is: 31,042.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,652.80 : 68,446.80 = 20,704.80 : x
  2. Step 2: Convert to fraction form
    45,652.80/68,446.80 = 20,704.80/x
  3. Step 3: Cross multiply
    45,652.80x = 68,446.80 × 20,704.80
  4. Step 4: Simplify right side
    45,652.80x = 1,417,177,304.64
  5. Step 5: Solve for x
    x = 1,417,177,304.64/45,652.80
  6. Step 6: Final answer
    x = 31,042.51

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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.