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Finding the Fourth Proportional to 69,321.37, 103,982.08 and 19,408.83

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Solution

The fourth proportional to 69,321.37, 103,982.08 and 19,408.83 is: 29,113.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,321.37 : 103,982.08 = 19,408.83 : x
  2. Step 2: Convert to fraction form
    69,321.37/103,982.08 = 19,408.83/x
  3. Step 3: Cross multiply
    69,321.37x = 103,982.08 × 19,408.83
  4. Step 4: Simplify right side
    69,321.37x = 2,018,170,513.77
  5. Step 5: Solve for x
    x = 2,018,170,513.77/69,321.37
  6. Step 6: Final answer
    x = 29,113.25

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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.