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Finding the Fourth Proportional to 80,274.60, 120,485.94 and 40,860.12

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Solution

The fourth proportional to 80,274.60, 120,485.94 and 40,860.12 is: 61,327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,274.60 : 120,485.94 = 40,860.12 : x
  2. Step 2: Convert to fraction form
    80,274.60/120,485.94 = 40,860.12/x
  3. Step 3: Cross multiply
    80,274.60x = 120,485.94 × 40,860.12
  4. Step 4: Simplify right side
    80,274.60x = 4,923,069,966.71
  5. Step 5: Solve for x
    x = 4,923,069,966.71/80,274.60
  6. Step 6: Final answer
    x = 61,327.87

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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.