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Finding the Fourth Proportional to 68,239,706.80, 102,359,560.20 and 22,181,486.80

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Solution

The fourth proportional to 68,239,706.80, 102,359,560.20 and 22,181,486.80 is: 33,272,230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,239,706.80 : 102,359,560.20 = 22,181,486.80 : x
  2. Step 2: Convert to fraction form
    68,239,706.80/102,359,560.20 = 22,181,486.80/x
  3. Step 3: Cross multiply
    68,239,706.80x = 102,359,560.20 × 22,181,486.80
  4. Step 4: Simplify right side
    68,239,706.80x = 2,270,487,233,430,105.50
  5. Step 5: Solve for x
    x = 2,270,487,233,430,105.50/68,239,706.80
  6. Step 6: Final answer
    x = 33,272,230.20

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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.