Home / 55,279.72-76,286.10-31,406.44

Finding the Fourth Proportional to 55,279.72, 76,286.10 and 31,406.44

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Solution

The fourth proportional to 55,279.72, 76,286.10 and 31,406.44 is: 43,340.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,279.72 : 76,286.10 = 31,406.44 : x
  2. Step 2: Convert to fraction form
    55,279.72/76,286.10 = 31,406.44/x
  3. Step 3: Cross multiply
    55,279.72x = 76,286.10 × 31,406.44
  4. Step 4: Simplify right side
    55,279.72x = 2,395,874,822.48
  5. Step 5: Solve for x
    x = 2,395,874,822.48/55,279.72
  6. Step 6: Final answer
    x = 43,340.94

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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.