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Finding the Fourth Proportional to 65,512.80, 98,123.40 and 34,311.60

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Solution

The fourth proportional to 65,512.80, 98,123.40 and 34,311.60 is: 51,391.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,512.80 : 98,123.40 = 34,311.60 : x
  2. Step 2: Convert to fraction form
    65,512.80/98,123.40 = 34,311.60/x
  3. Step 3: Cross multiply
    65,512.80x = 98,123.40 × 34,311.60
  4. Step 4: Simplify right side
    65,512.80x = 3,366,770,851.44
  5. Step 5: Solve for x
    x = 3,366,770,851.44/65,512.80
  6. Step 6: Final answer
    x = 51,391.04

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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.