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Finding the Fourth Proportional to 69,553, 104,349.66 and 20,305

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Solution

The fourth proportional to 69,553, 104,349.66 and 20,305 is: 30,463.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,553 : 104,349.66 = 20,305 : x
  2. Step 2: Convert to fraction form
    69,553/104,349.66 = 20,305/x
  3. Step 3: Cross multiply
    69,553x = 104,349.66 × 20,305
  4. Step 4: Simplify right side
    69,553x = 2,118,819,846.30
  5. Step 5: Solve for x
    x = 2,118,819,846.30/69,553
  6. Step 6: Final answer
    x = 30,463.39

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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.