Home / 55,172.48-76,139.46-31,302.72

Finding the Fourth Proportional to 55,172.48, 76,139.46 and 31,302.72

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Solution

The fourth proportional to 55,172.48, 76,139.46 and 31,302.72 is: 43,198.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,172.48 : 76,139.46 = 31,302.72 : x
  2. Step 2: Convert to fraction form
    55,172.48/76,139.46 = 31,302.72/x
  3. Step 3: Cross multiply
    55,172.48x = 76,139.46 × 31,302.72
  4. Step 4: Simplify right side
    55,172.48x = 2,383,372,197.33
  5. Step 5: Solve for x
    x = 2,383,372,197.33/55,172.48
  6. Step 6: Final answer
    x = 43,198.57

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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.