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Finding the Fourth Proportional to 69,399, 104,090.76 and 19,481.04

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Solution

The fourth proportional to 69,399, 104,090.76 and 19,481.04 is: 29,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,399 : 104,090.76 = 19,481.04 : x
  2. Step 2: Convert to fraction form
    69,399/104,090.76 = 19,481.04/x
  3. Step 3: Cross multiply
    69,399x = 104,090.76 × 19,481.04
  4. Step 4: Simplify right side
    69,399x = 2,027,796,259.19
  5. Step 5: Solve for x
    x = 2,027,796,259.19/69,399
  6. Step 6: Final answer
    x = 29,219.39

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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.