Home / 8,167,997.80-12,251,996.70-5,428,124.20

Finding the Fourth Proportional to 8,167,997.80, 12,251,996.70 and 5,428,124.20

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Solution

The fourth proportional to 8,167,997.80, 12,251,996.70 and 5,428,124.20 is: 8,142,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,167,997.80 : 12,251,996.70 = 5,428,124.20 : x
  2. Step 2: Convert to fraction form
    8,167,997.80/12,251,996.70 = 5,428,124.20/x
  3. Step 3: Cross multiply
    8,167,997.80x = 12,251,996.70 × 5,428,124.20
  4. Step 4: Simplify right side
    8,167,997.80x = 66,505,359,785,590.14
  5. Step 5: Solve for x
    x = 66,505,359,785,590.14/8,167,997.80
  6. Step 6: Final answer
    x = 8,142,186.30

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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.