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Finding the Fourth Proportional to 80,527.20, 120,790.80 and 56,907.60

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Solution

The fourth proportional to 80,527.20, 120,790.80 and 56,907.60 is: 85,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,527.20 : 120,790.80 = 56,907.60 : x
  2. Step 2: Convert to fraction form
    80,527.20/120,790.80 = 56,907.60/x
  3. Step 3: Cross multiply
    80,527.20x = 120,790.80 × 56,907.60
  4. Step 4: Simplify right side
    80,527.20x = 6,873,914,530.08
  5. Step 5: Solve for x
    x = 6,873,914,530.08/80,527.20
  6. Step 6: Final answer
    x = 85,361.40

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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.