Home / 53,408.85-80,121.25-19,672.30

Finding the Fourth Proportional to 53,408.85, 80,121.25 and 19,672.30

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Solution

The fourth proportional to 53,408.85, 80,121.25 and 19,672.30 is: 29,511.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,408.85 : 80,121.25 = 19,672.30 : x
  2. Step 2: Convert to fraction form
    53,408.85/80,121.25 = 19,672.30/x
  3. Step 3: Cross multiply
    53,408.85x = 80,121.25 × 19,672.30
  4. Step 4: Simplify right side
    53,408.85x = 1,576,168,967.71
  5. Step 5: Solve for x
    x = 1,576,168,967.71/53,408.85
  6. Step 6: Final answer
    x = 29,511.38

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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.