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Finding the Fourth Proportional to 8,172,076.80, 12,239,452.80 and 4,812,844.80

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Solution

The fourth proportional to 8,172,076.80, 12,239,452.80 and 4,812,844.80 is: 7,208,276.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172,076.80 : 12,239,452.80 = 4,812,844.80 : x
  2. Step 2: Convert to fraction form
    8,172,076.80/12,239,452.80 = 4,812,844.80/x
  3. Step 3: Cross multiply
    8,172,076.80x = 12,239,452.80 × 4,812,844.80
  4. Step 4: Simplify right side
    8,172,076.80x = 58,906,586,763,325.44
  5. Step 5: Solve for x
    x = 58,906,586,763,325.44/8,172,076.80
  6. Step 6: Final answer
    x = 7,208,276.21

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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.