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Finding the Fourth Proportional to 72,906.14, 109,350.20 and 19,602.20

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Solution

The fourth proportional to 72,906.14, 109,350.20 and 19,602.20 is: 29,400.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,906.14 : 109,350.20 = 19,602.20 : x
  2. Step 2: Convert to fraction form
    72,906.14/109,350.20 = 19,602.20/x
  3. Step 3: Cross multiply
    72,906.14x = 109,350.20 × 19,602.20
  4. Step 4: Simplify right side
    72,906.14x = 2,143,504,812.82
  5. Step 5: Solve for x
    x = 2,143,504,812.82/72,906.14
  6. Step 6: Final answer
    x = 29,400.88

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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.