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Finding the Fourth Proportional to 68,351.82, 102,542.92 and 20,973.50

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Solution

The fourth proportional to 68,351.82, 102,542.92 and 20,973.50 is: 31,464.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,351.82 : 102,542.92 = 20,973.50 : x
  2. Step 2: Convert to fraction form
    68,351.82/102,542.92 = 20,973.50/x
  3. Step 3: Cross multiply
    68,351.82x = 102,542.92 × 20,973.50
  4. Step 4: Simplify right side
    68,351.82x = 2,150,683,932.62
  5. Step 5: Solve for x
    x = 2,150,683,932.62/68,351.82
  6. Step 6: Final answer
    x = 31,464.91

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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.