Home / 80,556.21-111,198.56-53,688.91

Finding the Fourth Proportional to 80,556.21, 111,198.56 and 53,688.91

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Solution

The fourth proportional to 80,556.21, 111,198.56 and 53,688.91 is: 74,111.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,556.21 : 111,198.56 = 53,688.91 : x
  2. Step 2: Convert to fraction form
    80,556.21/111,198.56 = 53,688.91/x
  3. Step 3: Cross multiply
    80,556.21x = 111,198.56 × 53,688.91
  4. Step 4: Simplify right side
    80,556.21x = 5,970,129,479.97
  5. Step 5: Solve for x
    x = 5,970,129,479.97/80,556.21
  6. Step 6: Final answer
    x = 74,111.35

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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.