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Finding the Fourth Proportional to 61,229.40, 91,843.78 and 21,787.96

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Solution

The fourth proportional to 61,229.40, 91,843.78 and 21,787.96 is: 32,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,229.40 : 91,843.78 = 21,787.96 : x
  2. Step 2: Convert to fraction form
    61,229.40/91,843.78 = 21,787.96/x
  3. Step 3: Cross multiply
    61,229.40x = 91,843.78 × 21,787.96
  4. Step 4: Simplify right side
    61,229.40x = 2,001,088,604.89
  5. Step 5: Solve for x
    x = 2,001,088,604.89/61,229.40
  6. Step 6: Final answer
    x = 32,681.83

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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.