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Finding the Fourth Proportional to 80,390.71, 120,577.42 and 33,010.80

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Solution

The fourth proportional to 80,390.71, 120,577.42 and 33,010.80 is: 49,512.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,390.71 : 120,577.42 = 33,010.80 : x
  2. Step 2: Convert to fraction form
    80,390.71/120,577.42 = 33,010.80/x
  3. Step 3: Cross multiply
    80,390.71x = 120,577.42 × 33,010.80
  4. Step 4: Simplify right side
    80,390.71x = 3,980,357,096.14
  5. Step 5: Solve for x
    x = 3,980,357,096.14/80,390.71
  6. Step 6: Final answer
    x = 49,512.65

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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.