Home / 87,281.50-120,449.28-49,556.56

Finding the Fourth Proportional to 87,281.50, 120,449.28 and 49,556.56

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Solution

The fourth proportional to 87,281.50, 120,449.28 and 49,556.56 is: 68,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,281.50 : 120,449.28 = 49,556.56 : x
  2. Step 2: Convert to fraction form
    87,281.50/120,449.28 = 49,556.56/x
  3. Step 3: Cross multiply
    87,281.50x = 120,449.28 × 49,556.56
  4. Step 4: Simplify right side
    87,281.50x = 5,969,051,971.28
  5. Step 5: Solve for x
    x = 5,969,051,971.28/87,281.50
  6. Step 6: Final answer
    x = 68,388.51

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1.5x scale

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.