Home / 81,568,228.67-122,351,145.03-20,157,385.75

Finding the Fourth Proportional to 81,568,228.67, 122,351,145.03 and 20,157,385.75

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Solution

The fourth proportional to 81,568,228.67, 122,351,145.03 and 20,157,385.75 is: 30,235,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,568,228.67 : 122,351,145.03 = 20,157,385.75 : x
  2. Step 2: Convert to fraction form
    81,568,228.67/122,351,145.03 = 20,157,385.75/x
  3. Step 3: Cross multiply
    81,568,228.67x = 122,351,145.03 × 20,157,385.75
  4. Step 4: Simplify right side
    81,568,228.67x = 2,466,279,227,018,027.50
  5. Step 5: Solve for x
    x = 2,466,279,227,018,027.50/81,568,228.67
  6. Step 6: Final answer
    x = 30,235,782.57

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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.