Home / 80,674.13-111,137.60-56,429.82

Finding the Fourth Proportional to 80,674.13, 111,137.60 and 56,429.82

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Solution

The fourth proportional to 80,674.13, 111,137.60 and 56,429.82 is: 77,738.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,674.13 : 111,137.60 = 56,429.82 : x
  2. Step 2: Convert to fraction form
    80,674.13/111,137.60 = 56,429.82/x
  3. Step 3: Cross multiply
    80,674.13x = 111,137.60 × 56,429.82
  4. Step 4: Simplify right side
    80,674.13x = 6,271,474,481.08
  5. Step 5: Solve for x
    x = 6,271,474,481.08/80,674.13
  6. Step 6: Final answer
    x = 77,738.36

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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.