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Finding the Fourth Proportional to 69,056.30, 103,584.15 and 19,136.25

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Solution

The fourth proportional to 69,056.30, 103,584.15 and 19,136.25 is: 28,704.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,056.30 : 103,584.15 = 19,136.25 : x
  2. Step 2: Convert to fraction form
    69,056.30/103,584.15 = 19,136.25/x
  3. Step 3: Cross multiply
    69,056.30x = 103,584.15 × 19,136.25
  4. Step 4: Simplify right side
    69,056.30x = 1,982,212,190.44
  5. Step 5: Solve for x
    x = 1,982,212,190.44/69,056.30
  6. Step 6: Final answer
    x = 28,704.29

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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.