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Finding the Fourth Proportional to 80,644,108.80, 120,966,163.20 and 26,791,420.80

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Solution

The fourth proportional to 80,644,108.80, 120,966,163.20 and 26,791,420.80 is: 40,187,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,644,108.80 : 120,966,163.20 = 26,791,420.80 : x
  2. Step 2: Convert to fraction form
    80,644,108.80/120,966,163.20 = 26,791,420.80/x
  3. Step 3: Cross multiply
    80,644,108.80x = 120,966,163.20 × 26,791,420.80
  4. Step 4: Simplify right side
    80,644,108.80x = 3,240,855,380,852,674.50
  5. Step 5: Solve for x
    x = 3,240,855,380,852,674.50/80,644,108.80
  6. Step 6: Final answer
    x = 40,187,131.20

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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.