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Finding the Fourth Proportional to 48,304.44, 72,456.90 and 21,990.78

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Solution

The fourth proportional to 48,304.44, 72,456.90 and 21,990.78 is: 32,986.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,304.44 : 72,456.90 = 21,990.78 : x
  2. Step 2: Convert to fraction form
    48,304.44/72,456.90 = 21,990.78/x
  3. Step 3: Cross multiply
    48,304.44x = 72,456.90 × 21,990.78
  4. Step 4: Simplify right side
    48,304.44x = 1,593,383,747.38
  5. Step 5: Solve for x
    x = 1,593,383,747.38/48,304.44
  6. Step 6: Final answer
    x = 32,986.28

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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.