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Finding the Fourth Proportional to 69,483, 104,230.26 and 20,235

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Solution

The fourth proportional to 69,483, 104,230.26 and 20,235 is: 30,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,483 : 104,230.26 = 20,235 : x
  2. Step 2: Convert to fraction form
    69,483/104,230.26 = 20,235/x
  3. Step 3: Cross multiply
    69,483x = 104,230.26 × 20,235
  4. Step 4: Simplify right side
    69,483x = 2,109,099,311.10
  5. Step 5: Solve for x
    x = 2,109,099,311.10/69,483
  6. Step 6: Final answer
    x = 30,354.18

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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.