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Finding the Fourth Proportional to 68,380.76, 102,560.88 and 21,627.56

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Solution

The fourth proportional to 68,380.76, 102,560.88 and 21,627.56 is: 32,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,380.76 : 102,560.88 = 21,627.56 : x
  2. Step 2: Convert to fraction form
    68,380.76/102,560.88 = 21,627.56/x
  3. Step 3: Cross multiply
    68,380.76x = 102,560.88 × 21,627.56
  4. Step 4: Simplify right side
    68,380.76x = 2,218,141,923.36
  5. Step 5: Solve for x
    x = 2,218,141,923.36/68,380.76
  6. Step 6: Final answer
    x = 32,438.10

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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.