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Finding the Fourth Proportional to 64,936.49, 97,394.99 and 20,557.49

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Solution

The fourth proportional to 64,936.49, 97,394.99 and 20,557.49 is: 30,833.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,936.49 : 97,394.99 = 20,557.49 : x
  2. Step 2: Convert to fraction form
    64,936.49/97,394.99 = 20,557.49/x
  3. Step 3: Cross multiply
    64,936.49x = 97,394.99 × 20,557.49
  4. Step 4: Simplify right side
    64,936.49x = 2,002,195,943.21
  5. Step 5: Solve for x
    x = 2,002,195,943.21/64,936.49
  6. Step 6: Final answer
    x = 30,833.14

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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.