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Finding the Fourth Proportional to 69,157.50, 103,736.34 and 19,237.60

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Solution

The fourth proportional to 69,157.50, 103,736.34 and 19,237.60 is: 28,856.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,157.50 : 103,736.34 = 19,237.60 : x
  2. Step 2: Convert to fraction form
    69,157.50/103,736.34 = 19,237.60/x
  3. Step 3: Cross multiply
    69,157.50x = 103,736.34 × 19,237.60
  4. Step 4: Simplify right side
    69,157.50x = 1,995,638,214.38
  5. Step 5: Solve for x
    x = 1,995,638,214.38/69,157.50
  6. Step 6: Final answer
    x = 28,856.43

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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.