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Finding the Fourth Proportional to 68,619.52, 102,914.85 and 19,360

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Solution

The fourth proportional to 68,619.52, 102,914.85 and 19,360 is: 29,035.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,619.52 : 102,914.85 = 19,360 : x
  2. Step 2: Convert to fraction form
    68,619.52/102,914.85 = 19,360/x
  3. Step 3: Cross multiply
    68,619.52x = 102,914.85 × 19,360
  4. Step 4: Simplify right side
    68,619.52x = 1,992,431,496
  5. Step 5: Solve for x
    x = 1,992,431,496/68,619.52
  6. Step 6: Final answer
    x = 29,035.93

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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.