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Finding the Fourth Proportional to 80,846.87, 110,760.75 and 77,816.65

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Solution

The fourth proportional to 80,846.87, 110,760.75 and 77,816.65 is: 106,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,846.87 : 110,760.75 = 77,816.65 : x
  2. Step 2: Convert to fraction form
    80,846.87/110,760.75 = 77,816.65/x
  3. Step 3: Cross multiply
    80,846.87x = 110,760.75 × 77,816.65
  4. Step 4: Simplify right side
    80,846.87x = 8,619,030,127.40
  5. Step 5: Solve for x
    x = 8,619,030,127.40/80,846.87
  6. Step 6: Final answer
    x = 106,609.32

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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.