Home / 51,187.43-76,781.16-20,000.81

Finding the Fourth Proportional to 51,187.43, 76,781.16 and 20,000.81

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Solution

The fourth proportional to 51,187.43, 76,781.16 and 20,000.81 is: 30,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,187.43 : 76,781.16 = 20,000.81 : x
  2. Step 2: Convert to fraction form
    51,187.43/76,781.16 = 20,000.81/x
  3. Step 3: Cross multiply
    51,187.43x = 76,781.16 × 20,000.81
  4. Step 4: Simplify right side
    51,187.43x = 1,535,685,584.69
  5. Step 5: Solve for x
    x = 1,535,685,584.69/51,187.43
  6. Step 6: Final answer
    x = 30,001.22

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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.