Home / 51,187.87-76,781.81-20,001.25

Finding the Fourth Proportional to 51,187.87, 76,781.81 and 20,001.25

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Solution

The fourth proportional to 51,187.87, 76,781.81 and 20,001.25 is: 30,001.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,187.87 : 76,781.81 = 20,001.25 : x
  2. Step 2: Convert to fraction form
    51,187.87/76,781.81 = 20,001.25/x
  3. Step 3: Cross multiply
    51,187.87x = 76,781.81 × 20,001.25
  4. Step 4: Simplify right side
    51,187.87x = 1,535,732,177.26
  5. Step 5: Solve for x
    x = 1,535,732,177.26/51,187.87
  6. Step 6: Final answer
    x = 30,001.88

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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.