Home / 55,183.25-76,147.61-30,978.66

Finding the Fourth Proportional to 55,183.25, 76,147.61 and 30,978.66

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Solution

The fourth proportional to 55,183.25, 76,147.61 and 30,978.66 is: 42,747.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,183.25 : 76,147.61 = 30,978.66 : x
  2. Step 2: Convert to fraction form
    55,183.25/76,147.61 = 30,978.66/x
  3. Step 3: Cross multiply
    55,183.25x = 76,147.61 × 30,978.66
  4. Step 4: Simplify right side
    55,183.25x = 2,358,950,765.11
  5. Step 5: Solve for x
    x = 2,358,950,765.11/55,183.25
  6. Step 6: Final answer
    x = 42,747.59

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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.