Home / 55,306.80-76,327.92-31,440.96

Finding the Fourth Proportional to 55,306.80, 76,327.92 and 31,440.96

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Solution

The fourth proportional to 55,306.80, 76,327.92 and 31,440.96 is: 43,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,306.80 : 76,327.92 = 31,440.96 : x
  2. Step 2: Convert to fraction form
    55,306.80/76,327.92 = 31,440.96/x
  3. Step 3: Cross multiply
    55,306.80x = 76,327.92 × 31,440.96
  4. Step 4: Simplify right side
    55,306.80x = 2,399,823,079.60
  5. Step 5: Solve for x
    x = 2,399,823,079.60/55,306.80
  6. Step 6: Final answer
    x = 43,391.10

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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.