Home / 80,815.30-111,467.75-68,631.66

Finding the Fourth Proportional to 80,815.30, 111,467.75 and 68,631.66

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Solution

The fourth proportional to 80,815.30, 111,467.75 and 68,631.66 is: 94,662.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,815.30 : 111,467.75 = 68,631.66 : x
  2. Step 2: Convert to fraction form
    80,815.30/111,467.75 = 68,631.66/x
  3. Step 3: Cross multiply
    80,815.30x = 111,467.75 × 68,631.66
  4. Step 4: Simplify right side
    80,815.30x = 7,650,216,161.63
  5. Step 5: Solve for x
    x = 7,650,216,161.63/80,815.30
  6. Step 6: Final answer
    x = 94,662.97

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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.