Home / 55,245.65-76,239.17-31,370.78

Finding the Fourth Proportional to 55,245.65, 76,239.17 and 31,370.78

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Solution

The fourth proportional to 55,245.65, 76,239.17 and 31,370.78 is: 43,291.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,245.65 : 76,239.17 = 31,370.78 : x
  2. Step 2: Convert to fraction form
    55,245.65/76,239.17 = 31,370.78/x
  3. Step 3: Cross multiply
    55,245.65x = 76,239.17 × 31,370.78
  4. Step 4: Simplify right side
    55,245.65x = 2,391,682,229.45
  5. Step 5: Solve for x
    x = 2,391,682,229.45/55,245.65
  6. Step 6: Final answer
    x = 43,291.77

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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.