Home / 72,186.89-108,036.39-51,544.31

Finding the Fourth Proportional to 72,186.89, 108,036.39 and 51,544.31

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Solution

The fourth proportional to 72,186.89, 108,036.39 and 51,544.31 is: 77,142.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,186.89 : 108,036.39 = 51,544.31 : x
  2. Step 2: Convert to fraction form
    72,186.89/108,036.39 = 51,544.31/x
  3. Step 3: Cross multiply
    72,186.89x = 108,036.39 × 51,544.31
  4. Step 4: Simplify right side
    72,186.89x = 5,568,661,177.44
  5. Step 5: Solve for x
    x = 5,568,661,177.44/72,186.89
  6. Step 6: Final answer
    x = 77,142.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.