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Finding the Fourth Proportional to 69,703.70, 104,496.80 and 30,231.09

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Solution

The fourth proportional to 69,703.70, 104,496.80 and 30,231.09 is: 45,321.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,703.70 : 104,496.80 = 30,231.09 : x
  2. Step 2: Convert to fraction form
    69,703.70/104,496.80 = 30,231.09/x
  3. Step 3: Cross multiply
    69,703.70x = 104,496.80 × 30,231.09
  4. Step 4: Simplify right side
    69,703.70x = 3,159,052,014.36
  5. Step 5: Solve for x
    x = 3,159,052,014.36/69,703.70
  6. Step 6: Final answer
    x = 45,321.16

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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.