Home / 69,132.78-103,699.10-19,212.85

Finding the Fourth Proportional to 69,132.78, 103,699.10 and 19,212.85

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Solution

The fourth proportional to 69,132.78, 103,699.10 and 19,212.85 is: 28,819.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,132.78 : 103,699.10 = 19,212.85 : x
  2. Step 2: Convert to fraction form
    69,132.78/103,699.10 = 19,212.85/x
  3. Step 3: Cross multiply
    69,132.78x = 103,699.10 × 19,212.85
  4. Step 4: Simplify right side
    69,132.78x = 1,992,355,253.44
  5. Step 5: Solve for x
    x = 1,992,355,253.44/69,132.78
  6. Step 6: Final answer
    x = 28,819.26

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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.