Home / 51,172.20-76,758.30-17,881.20

Finding the Fourth Proportional to 51,172.20, 76,758.30 and 17,881.20

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Solution

The fourth proportional to 51,172.20, 76,758.30 and 17,881.20 is: 26,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,172.20 : 76,758.30 = 17,881.20 : x
  2. Step 2: Convert to fraction form
    51,172.20/76,758.30 = 17,881.20/x
  3. Step 3: Cross multiply
    51,172.20x = 76,758.30 × 17,881.20
  4. Step 4: Simplify right side
    51,172.20x = 1,372,530,513.96
  5. Step 5: Solve for x
    x = 1,372,530,513.96/51,172.20
  6. Step 6: Final answer
    x = 26,821.80

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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.