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Finding the Fourth Proportional to 45,379.72, 68,076.60 and 14,212

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Solution

The fourth proportional to 45,379.72, 68,076.60 and 14,212 is: 21,320.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,379.72 : 68,076.60 = 14,212 : x
  2. Step 2: Convert to fraction form
    45,379.72/68,076.60 = 14,212/x
  3. Step 3: Cross multiply
    45,379.72x = 68,076.60 × 14,212
  4. Step 4: Simplify right side
    45,379.72x = 967,504,639.20
  5. Step 5: Solve for x
    x = 967,504,639.20/45,379.72
  6. Step 6: Final answer
    x = 21,320.20

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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.