Home / 80,450.36-111,137.32-64,296.99

Finding the Fourth Proportional to 80,450.36, 111,137.32 and 64,296.99

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Solution

The fourth proportional to 80,450.36, 111,137.32 and 64,296.99 is: 88,822.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,450.36 : 111,137.32 = 64,296.99 : x
  2. Step 2: Convert to fraction form
    80,450.36/111,137.32 = 64,296.99/x
  3. Step 3: Cross multiply
    80,450.36x = 111,137.32 × 64,296.99
  4. Step 4: Simplify right side
    80,450.36x = 7,145,794,871.37
  5. Step 5: Solve for x
    x = 7,145,794,871.37/80,450.36
  6. Step 6: Final answer
    x = 88,822.41

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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.