Home / 53,120.72-79,676.76-19,839.44

Finding the Fourth Proportional to 53,120.72, 79,676.76 and 19,839.44

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Solution

The fourth proportional to 53,120.72, 79,676.76 and 19,839.44 is: 29,757.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,120.72 : 79,676.76 = 19,839.44 : x
  2. Step 2: Convert to fraction form
    53,120.72/79,676.76 = 19,839.44/x
  3. Step 3: Cross multiply
    53,120.72x = 79,676.76 × 19,839.44
  4. Step 4: Simplify right side
    53,120.72x = 1,580,742,299.41
  5. Step 5: Solve for x
    x = 1,580,742,299.41/53,120.72
  6. Step 6: Final answer
    x = 29,757.55

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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.