Home / 55,740-76,930.92-31,867.68

Finding the Fourth Proportional to 55,740, 76,930.92 and 31,867.68

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Solution

The fourth proportional to 55,740, 76,930.92 and 31,867.68 is: 43,982.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,740 : 76,930.92 = 31,867.68 : x
  2. Step 2: Convert to fraction form
    55,740/76,930.92 = 31,867.68/x
  3. Step 3: Cross multiply
    55,740x = 76,930.92 × 31,867.68
  4. Step 4: Simplify right side
    55,740x = 2,451,609,940.67
  5. Step 5: Solve for x
    x = 2,451,609,940.67/55,740
  6. Step 6: Final answer
    x = 43,982.96

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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.