Home / 87,556.78-120,828.84-49,831.02

Finding the Fourth Proportional to 87,556.78, 120,828.84 and 49,831.02

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Solution

The fourth proportional to 87,556.78, 120,828.84 and 49,831.02 is: 68,767.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,556.78 : 120,828.84 = 49,831.02 : x
  2. Step 2: Convert to fraction form
    87,556.78/120,828.84 = 49,831.02/x
  3. Step 3: Cross multiply
    87,556.78x = 120,828.84 × 49,831.02
  4. Step 4: Simplify right side
    87,556.78x = 6,021,024,342.62
  5. Step 5: Solve for x
    x = 6,021,024,342.62/87,556.78
  6. Step 6: Final answer
    x = 68,767.08

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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.