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Finding the Fourth Proportional to 35,969.92, 53,964.64 and 20,398.56

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Solution

The fourth proportional to 35,969.92, 53,964.64 and 20,398.56 is: 30,603.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,969.92 : 53,964.64 = 20,398.56 : x
  2. Step 2: Convert to fraction form
    35,969.92/53,964.64 = 20,398.56/x
  3. Step 3: Cross multiply
    35,969.92x = 53,964.64 × 20,398.56
  4. Step 4: Simplify right side
    35,969.92x = 1,100,800,946.92
  5. Step 5: Solve for x
    x = 1,100,800,946.92/35,969.92
  6. Step 6: Final answer
    x = 30,603.37

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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.