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Finding the Fourth Proportional to 69,156.50, 103,734.84 and 19,236.60

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Solution

The fourth proportional to 69,156.50, 103,734.84 and 19,236.60 is: 28,854.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,156.50 : 103,734.84 = 19,236.60 : x
  2. Step 2: Convert to fraction form
    69,156.50/103,734.84 = 19,236.60/x
  3. Step 3: Cross multiply
    69,156.50x = 103,734.84 × 19,236.60
  4. Step 4: Simplify right side
    69,156.50x = 1,995,505,623.14
  5. Step 5: Solve for x
    x = 1,995,505,623.14/69,156.50
  6. Step 6: Final answer
    x = 28,854.93

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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.