Home / 80,845.37-110,758.69-77,815.15

Finding the Fourth Proportional to 80,845.37, 110,758.69 and 77,815.15

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Solution

The fourth proportional to 80,845.37, 110,758.69 and 77,815.15 is: 106,607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,845.37 : 110,758.69 = 77,815.15 : x
  2. Step 2: Convert to fraction form
    80,845.37/110,758.69 = 77,815.15/x
  3. Step 3: Cross multiply
    80,845.37x = 110,758.69 × 77,815.15
  4. Step 4: Simplify right side
    80,845.37x = 8,618,703,687.08
  5. Step 5: Solve for x
    x = 8,618,703,687.08/80,845.37
  6. Step 6: Final answer
    x = 106,607.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.