Home / 87,555.78-120,831.48-53,553.60

Finding the Fourth Proportional to 87,555.78, 120,831.48 and 53,553.60

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Solution

The fourth proportional to 87,555.78, 120,831.48 and 53,553.60 is: 73,906.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,555.78 : 120,831.48 = 53,553.60 : x
  2. Step 2: Convert to fraction form
    87,555.78/120,831.48 = 53,553.60/x
  3. Step 3: Cross multiply
    87,555.78x = 120,831.48 × 53,553.60
  4. Step 4: Simplify right side
    87,555.78x = 6,470,960,747.33
  5. Step 5: Solve for x
    x = 6,470,960,747.33/87,555.78
  6. Step 6: Final answer
    x = 73,906.72

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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.