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Finding the Fourth Proportional to 67,952.63, 101,949.60 and 21,205.91

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Solution

The fourth proportional to 67,952.63, 101,949.60 and 21,205.91 is: 31,815.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,952.63 : 101,949.60 = 21,205.91 : x
  2. Step 2: Convert to fraction form
    67,952.63/101,949.60 = 21,205.91/x
  3. Step 3: Cross multiply
    67,952.63x = 101,949.60 × 21,205.91
  4. Step 4: Simplify right side
    67,952.63x = 2,161,934,042.14
  5. Step 5: Solve for x
    x = 2,161,934,042.14/67,952.63
  6. Step 6: Final answer
    x = 31,815.31

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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.