Home / 55,149.76-76,105.08-31,278.64

Finding the Fourth Proportional to 55,149.76, 76,105.08 and 31,278.64

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Solution

The fourth proportional to 55,149.76, 76,105.08 and 31,278.64 is: 43,163.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,149.76 : 76,105.08 = 31,278.64 : x
  2. Step 2: Convert to fraction form
    55,149.76/76,105.08 = 31,278.64/x
  3. Step 3: Cross multiply
    55,149.76x = 76,105.08 × 31,278.64
  4. Step 4: Simplify right side
    55,149.76x = 2,380,463,399.49
  5. Step 5: Solve for x
    x = 2,380,463,399.49/55,149.76
  6. Step 6: Final answer
    x = 43,163.62

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1.5x scale

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.