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Finding the Fourth Proportional to 80,576.60, 120,864.90 and 45,584.60

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Solution

The fourth proportional to 80,576.60, 120,864.90 and 45,584.60 is: 68,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,576.60 : 120,864.90 = 45,584.60 : x
  2. Step 2: Convert to fraction form
    80,576.60/120,864.90 = 45,584.60/x
  3. Step 3: Cross multiply
    80,576.60x = 120,864.90 × 45,584.60
  4. Step 4: Simplify right side
    80,576.60x = 5,509,578,120.54
  5. Step 5: Solve for x
    x = 5,509,578,120.54/80,576.60
  6. Step 6: Final answer
    x = 68,376.90

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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.