Home / 71,220,658.72-106,775,178.72-28,122,121.84

Finding the Fourth Proportional to 71,220,658.72, 106,775,178.72 and 28,122,121.84

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Solution

The fourth proportional to 71,220,658.72, 106,775,178.72 and 28,122,121.84 is: 42,161,145.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220,658.72 : 106,775,178.72 = 28,122,121.84 : x
  2. Step 2: Convert to fraction form
    71,220,658.72/106,775,178.72 = 28,122,121.84/x
  3. Step 3: Cross multiply
    71,220,658.72x = 106,775,178.72 × 28,122,121.84
  4. Step 4: Simplify right side
    71,220,658.72x = 3,002,744,585,451,615
  5. Step 5: Solve for x
    x = 3,002,744,585,451,615/71,220,658.72
  6. Step 6: Final answer
    x = 42,161,145.93

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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.