Home / 89,128.75-122,997.68-53,320.27

Finding the Fourth Proportional to 89,128.75, 122,997.68 and 53,320.27

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Solution

The fourth proportional to 89,128.75, 122,997.68 and 53,320.27 is: 73,581.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,128.75 : 122,997.68 = 53,320.27 : x
  2. Step 2: Convert to fraction form
    89,128.75/122,997.68 = 53,320.27/x
  3. Step 3: Cross multiply
    89,128.75x = 122,997.68 × 53,320.27
  4. Step 4: Simplify right side
    89,128.75x = 6,558,269,240.37
  5. Step 5: Solve for x
    x = 6,558,269,240.37/89,128.75
  6. Step 6: Final answer
    x = 73,581.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.