Home / 55,305.54-76,321.67-31,431.60

Finding the Fourth Proportional to 55,305.54, 76,321.67 and 31,431.60

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Solution

The fourth proportional to 55,305.54, 76,321.67 and 31,431.60 is: 43,375.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,305.54 : 76,321.67 = 31,431.60 : x
  2. Step 2: Convert to fraction form
    55,305.54/76,321.67 = 31,431.60/x
  3. Step 3: Cross multiply
    55,305.54x = 76,321.67 × 31,431.60
  4. Step 4: Simplify right side
    55,305.54x = 2,398,912,202.77
  5. Step 5: Solve for x
    x = 2,398,912,202.77/55,305.54
  6. Step 6: Final answer
    x = 43,375.62

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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.