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Finding the Fourth Proportional to 67,739.60, 101,436.60 and 53,915.60

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Solution

The fourth proportional to 67,739.60, 101,436.60 and 53,915.60 is: 80,735.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,739.60 : 101,436.60 = 53,915.60 : x
  2. Step 2: Convert to fraction form
    67,739.60/101,436.60 = 53,915.60/x
  3. Step 3: Cross multiply
    67,739.60x = 101,436.60 × 53,915.60
  4. Step 4: Simplify right side
    67,739.60x = 5,469,015,150.96
  5. Step 5: Solve for x
    x = 5,469,015,150.96/67,739.60
  6. Step 6: Final answer
    x = 80,735.86

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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.