Home / 51,174.38-76,761-20,009.36

Finding the Fourth Proportional to 51,174.38, 76,761 and 20,009.36

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Solution

The fourth proportional to 51,174.38, 76,761 and 20,009.36 is: 30,013.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,174.38 : 76,761 = 20,009.36 : x
  2. Step 2: Convert to fraction form
    51,174.38/76,761 = 20,009.36/x
  3. Step 3: Cross multiply
    51,174.38x = 76,761 × 20,009.36
  4. Step 4: Simplify right side
    51,174.38x = 1,535,938,099.16
  5. Step 5: Solve for x
    x = 1,535,938,099.16/51,174.38
  6. Step 6: Final answer
    x = 30,013.81

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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.