Home / 54,976.62-75,861.32-30,778.90

Finding the Fourth Proportional to 54,976.62, 75,861.32 and 30,778.90

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Solution

The fourth proportional to 54,976.62, 75,861.32 and 30,778.90 is: 42,471.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,976.62 : 75,861.32 = 30,778.90 : x
  2. Step 2: Convert to fraction form
    54,976.62/75,861.32 = 30,778.90/x
  3. Step 3: Cross multiply
    54,976.62x = 75,861.32 × 30,778.90
  4. Step 4: Simplify right side
    54,976.62x = 2,334,927,982.15
  5. Step 5: Solve for x
    x = 2,334,927,982.15/54,976.62
  6. Step 6: Final answer
    x = 42,471.29

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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.