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Finding the Fourth Proportional to 61,188.94, 91,786.09 and 16,820.06

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Solution

The fourth proportional to 61,188.94, 91,786.09 and 16,820.06 is: 25,230.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,188.94 : 91,786.09 = 16,820.06 : x
  2. Step 2: Convert to fraction form
    61,188.94/91,786.09 = 16,820.06/x
  3. Step 3: Cross multiply
    61,188.94x = 91,786.09 × 16,820.06
  4. Step 4: Simplify right side
    61,188.94x = 1,543,847,540.97
  5. Step 5: Solve for x
    x = 1,543,847,540.97/61,188.94
  6. Step 6: Final answer
    x = 25,230.83

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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.