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Finding the Fourth Proportional to 72,202.82, 108,309.69 and 19,611.54

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Solution

The fourth proportional to 72,202.82, 108,309.69 and 19,611.54 is: 29,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,202.82 : 108,309.69 = 19,611.54 : x
  2. Step 2: Convert to fraction form
    72,202.82/108,309.69 = 19,611.54/x
  3. Step 3: Cross multiply
    72,202.82x = 108,309.69 × 19,611.54
  4. Step 4: Simplify right side
    72,202.82x = 2,124,119,817.82
  5. Step 5: Solve for x
    x = 2,124,119,817.82/72,202.82
  6. Step 6: Final answer
    x = 29,418.80

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1.5x scale

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.