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Finding the Fourth Proportional to 80,690.80, 121,036.20 and 41,234.80

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Solution

The fourth proportional to 80,690.80, 121,036.20 and 41,234.80 is: 61,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,690.80 : 121,036.20 = 41,234.80 : x
  2. Step 2: Convert to fraction form
    80,690.80/121,036.20 = 41,234.80/x
  3. Step 3: Cross multiply
    80,690.80x = 121,036.20 × 41,234.80
  4. Step 4: Simplify right side
    80,690.80x = 4,990,903,499.76
  5. Step 5: Solve for x
    x = 4,990,903,499.76/80,690.80
  6. Step 6: Final answer
    x = 61,852.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.