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Finding the Fourth Proportional to 79,745.37, 119,618.05 and 54,709.51

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Solution

The fourth proportional to 79,745.37, 119,618.05 and 54,709.51 is: 82,064.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,745.37 : 119,618.05 = 54,709.51 : x
  2. Step 2: Convert to fraction form
    79,745.37/119,618.05 = 54,709.51/x
  3. Step 3: Cross multiply
    79,745.37x = 119,618.05 × 54,709.51
  4. Step 4: Simplify right side
    79,745.37x = 6,544,245,356.04
  5. Step 5: Solve for x
    x = 6,544,245,356.04/79,745.37
  6. Step 6: Final answer
    x = 82,064.27

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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.