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Finding the Fourth Proportional to 67,363.70, 101,059.95 and 20,621.30

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Solution

The fourth proportional to 67,363.70, 101,059.95 and 20,621.30 is: 30,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,363.70 : 101,059.95 = 20,621.30 : x
  2. Step 2: Convert to fraction form
    67,363.70/101,059.95 = 20,621.30/x
  3. Step 3: Cross multiply
    67,363.70x = 101,059.95 × 20,621.30
  4. Step 4: Simplify right side
    67,363.70x = 2,083,987,546.94
  5. Step 5: Solve for x
    x = 2,083,987,546.94/67,363.70
  6. Step 6: Final answer
    x = 30,936.36

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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.