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Finding the Fourth Proportional to 67,586.78, 101,380.14 and 18,338.78

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Solution

The fourth proportional to 67,586.78, 101,380.14 and 18,338.78 is: 27,508.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,586.78 : 101,380.14 = 18,338.78 : x
  2. Step 2: Convert to fraction form
    67,586.78/101,380.14 = 18,338.78/x
  3. Step 3: Cross multiply
    67,586.78x = 101,380.14 × 18,338.78
  4. Step 4: Simplify right side
    67,586.78x = 1,859,188,083.83
  5. Step 5: Solve for x
    x = 1,859,188,083.83/67,586.78
  6. Step 6: Final answer
    x = 27,508.16

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1.5x scale

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.