Home / 55,785.72-76,982.12-31,914.60

Finding the Fourth Proportional to 55,785.72, 76,982.12 and 31,914.60

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Solution

The fourth proportional to 55,785.72, 76,982.12 and 31,914.60 is: 44,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,785.72 : 76,982.12 = 31,914.60 : x
  2. Step 2: Convert to fraction form
    55,785.72/76,982.12 = 31,914.60/x
  3. Step 3: Cross multiply
    55,785.72x = 76,982.12 × 31,914.60
  4. Step 4: Simplify right side
    55,785.72x = 2,456,853,566.95
  5. Step 5: Solve for x
    x = 2,456,853,566.95/55,785.72
  6. Step 6: Final answer
    x = 44,040.90

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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.