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Finding the Fourth Proportional to 69,999.90, 104,972.49 and 30,530.04

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Solution

The fourth proportional to 69,999.90, 104,972.49 and 30,530.04 is: 45,783.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,999.90 : 104,972.49 = 30,530.04 : x
  2. Step 2: Convert to fraction form
    69,999.90/104,972.49 = 30,530.04/x
  3. Step 3: Cross multiply
    69,999.90x = 104,972.49 × 30,530.04
  4. Step 4: Simplify right side
    69,999.90x = 3,204,814,318.60
  5. Step 5: Solve for x
    x = 3,204,814,318.60/69,999.90
  6. Step 6: Final answer
    x = 45,783.13

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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.