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Finding the Fourth Proportional to 80,182.74, 120,269.75 and 30,261.63

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Solution

The fourth proportional to 80,182.74, 120,269.75 and 30,261.63 is: 45,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,182.74 : 120,269.75 = 30,261.63 : x
  2. Step 2: Convert to fraction form
    80,182.74/120,269.75 = 30,261.63/x
  3. Step 3: Cross multiply
    80,182.74x = 120,269.75 × 30,261.63
  4. Step 4: Simplify right side
    80,182.74x = 3,639,558,674.69
  5. Step 5: Solve for x
    x = 3,639,558,674.69/80,182.74
  6. Step 6: Final answer
    x = 45,390.80

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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.