Home / 80,556,511.28-120,872,558.28-40,170,144.56

Finding the Fourth Proportional to 80,556,511.28, 120,872,558.28 and 40,170,144.56

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Solution

The fourth proportional to 80,556,511.28, 120,872,558.28 and 40,170,144.56 is: 60,274,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,556,511.28 : 120,872,558.28 = 40,170,144.56 : x
  2. Step 2: Convert to fraction form
    80,556,511.28/120,872,558.28 = 40,170,144.56/x
  3. Step 3: Cross multiply
    80,556,511.28x = 120,872,558.28 × 40,170,144.56
  4. Step 4: Simplify right side
    80,556,511.28x = 4,855,468,139,444,625
  5. Step 5: Solve for x
    x = 4,855,468,139,444,625/80,556,511.28
  6. Step 6: Final answer
    x = 60,274,061.80

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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.