Home / 51,201.85-76,780.23-25,885.78

Finding the Fourth Proportional to 51,201.85, 76,780.23 and 25,885.78

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Solution

The fourth proportional to 51,201.85, 76,780.23 and 25,885.78 is: 38,817.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,201.85 : 76,780.23 = 25,885.78 : x
  2. Step 2: Convert to fraction form
    51,201.85/76,780.23 = 25,885.78/x
  3. Step 3: Cross multiply
    51,201.85x = 76,780.23 × 25,885.78
  4. Step 4: Simplify right side
    51,201.85x = 1,987,516,142.13
  5. Step 5: Solve for x
    x = 1,987,516,142.13/51,201.85
  6. Step 6: Final answer
    x = 38,817.27

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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.