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Finding the Fourth Proportional to 65,787.97, 90,787.90 and 36,320.62

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Solution

The fourth proportional to 65,787.97, 90,787.90 and 36,320.62 is: 50,122.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,787.97 : 90,787.90 = 36,320.62 : x
  2. Step 2: Convert to fraction form
    65,787.97/90,787.90 = 36,320.62/x
  3. Step 3: Cross multiply
    65,787.97x = 90,787.90 × 36,320.62
  4. Step 4: Simplify right side
    65,787.97x = 3,297,472,680.33
  5. Step 5: Solve for x
    x = 3,297,472,680.33/65,787.97
  6. Step 6: Final answer
    x = 50,122.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.