Home / 80,840.36-111,556.76-45,029.64

Finding the Fourth Proportional to 80,840.36, 111,556.76 and 45,029.64

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Solution

The fourth proportional to 80,840.36, 111,556.76 and 45,029.64 is: 62,139.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,840.36 : 111,556.76 = 45,029.64 : x
  2. Step 2: Convert to fraction form
    80,840.36/111,556.76 = 45,029.64/x
  3. Step 3: Cross multiply
    80,840.36x = 111,556.76 × 45,029.64
  4. Step 4: Simplify right side
    80,840.36x = 5,023,360,742.37
  5. Step 5: Solve for x
    x = 5,023,360,742.37/80,840.36
  6. Step 6: Final answer
    x = 62,139.27

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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.