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Finding the Fourth Proportional to 68,608,951.20, 102,913,426.80 and 28,206,007.20

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Solution

The fourth proportional to 68,608,951.20, 102,913,426.80 and 28,206,007.20 is: 42,309,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,608,951.20 : 102,913,426.80 = 28,206,007.20 : x
  2. Step 2: Convert to fraction form
    68,608,951.20/102,913,426.80 = 28,206,007.20/x
  3. Step 3: Cross multiply
    68,608,951.20x = 102,913,426.80 × 28,206,007.20
  4. Step 4: Simplify right side
    68,608,951.20x = 2,902,776,857,297,473
  5. Step 5: Solve for x
    x = 2,902,776,857,297,473/68,608,951.20
  6. Step 6: Final answer
    x = 42,309,010.80

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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.