Home / 77,180.05-106,406.36-55,651.78

Finding the Fourth Proportional to 77,180.05, 106,406.36 and 55,651.78

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Solution

The fourth proportional to 77,180.05, 106,406.36 and 55,651.78 is: 76,725.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,180.05 : 106,406.36 = 55,651.78 : x
  2. Step 2: Convert to fraction form
    77,180.05/106,406.36 = 55,651.78/x
  3. Step 3: Cross multiply
    77,180.05x = 106,406.36 × 55,651.78
  4. Step 4: Simplify right side
    77,180.05x = 5,921,702,944.42
  5. Step 5: Solve for x
    x = 5,921,702,944.42/77,180.05
  6. Step 6: Final answer
    x = 76,725.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.