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Finding the Fourth Proportional to 61,170.16, 91,745.42 and 16,786.55

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Solution

The fourth proportional to 61,170.16, 91,745.42 and 16,786.55 is: 25,177.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,170.16 : 91,745.42 = 16,786.55 : x
  2. Step 2: Convert to fraction form
    61,170.16/91,745.42 = 16,786.55/x
  3. Step 3: Cross multiply
    61,170.16x = 91,745.42 × 16,786.55
  4. Step 4: Simplify right side
    61,170.16x = 1,540,089,080.10
  5. Step 5: Solve for x
    x = 1,540,089,080.10/61,170.16
  6. Step 6: Final answer
    x = 25,177.13

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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.