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Finding the Fourth Proportional to 80,103.21, 110,590.40 and 49,929.40

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Solution

The fourth proportional to 80,103.21, 110,590.40 and 49,929.40 is: 68,932.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,103.21 : 110,590.40 = 49,929.40 : x
  2. Step 2: Convert to fraction form
    80,103.21/110,590.40 = 49,929.40/x
  3. Step 3: Cross multiply
    80,103.21x = 110,590.40 × 49,929.40
  4. Step 4: Simplify right side
    80,103.21x = 5,521,712,380.56
  5. Step 5: Solve for x
    x = 5,521,712,380.56/80,103.21
  6. Step 6: Final answer
    x = 68,932.47

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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.