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Finding the Fourth Proportional to 45,337, 68,009.34 and 12,505

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Solution

The fourth proportional to 45,337, 68,009.34 and 12,505 is: 18,758.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,337 : 68,009.34 = 12,505 : x
  2. Step 2: Convert to fraction form
    45,337/68,009.34 = 12,505/x
  3. Step 3: Cross multiply
    45,337x = 68,009.34 × 12,505
  4. Step 4: Simplify right side
    45,337x = 850,456,796.70
  5. Step 5: Solve for x
    x = 850,456,796.70/45,337
  6. Step 6: Final answer
    x = 18,758.56

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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.