Home / 87,281.78-120,448.94-49,556.03

Finding the Fourth Proportional to 87,281.78, 120,448.94 and 49,556.03

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Solution

The fourth proportional to 87,281.78, 120,448.94 and 49,556.03 is: 68,387.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,281.78 : 120,448.94 = 49,556.03 : x
  2. Step 2: Convert to fraction form
    87,281.78/120,448.94 = 49,556.03/x
  3. Step 3: Cross multiply
    87,281.78x = 120,448.94 × 49,556.03
  4. Step 4: Simplify right side
    87,281.78x = 5,968,971,284.11
  5. Step 5: Solve for x
    x = 5,968,971,284.11/87,281.78
  6. Step 6: Final answer
    x = 68,387.37

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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.