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Finding the Fourth Proportional to 45,785.78, 68,670.79 and 13,764.37

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Solution

The fourth proportional to 45,785.78, 68,670.79 and 13,764.37 is: 20,644.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,785.78 : 68,670.79 = 13,764.37 : x
  2. Step 2: Convert to fraction form
    45,785.78/68,670.79 = 13,764.37/x
  3. Step 3: Cross multiply
    45,785.78x = 68,670.79 × 13,764.37
  4. Step 4: Simplify right side
    45,785.78x = 945,210,161.75
  5. Step 5: Solve for x
    x = 945,210,161.75/45,785.78
  6. Step 6: Final answer
    x = 20,644.19

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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.