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Finding the Fourth Proportional to 111,640.78, 167,466.65 and 45,072.60

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Solution

The fourth proportional to 111,640.78, 167,466.65 and 45,072.60 is: 67,611.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,640.78 : 167,466.65 = 45,072.60 : x
  2. Step 2: Convert to fraction form
    111,640.78/167,466.65 = 45,072.60/x
  3. Step 3: Cross multiply
    111,640.78x = 167,466.65 × 45,072.60
  4. Step 4: Simplify right side
    111,640.78x = 7,548,157,328.79
  5. Step 5: Solve for x
    x = 7,548,157,328.79/111,640.78
  6. Step 6: Final answer
    x = 67,611.11

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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.