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Finding the Fourth Proportional to 82,380.63, 123,571.60 and 53,941.55

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Solution

The fourth proportional to 82,380.63, 123,571.60 and 53,941.55 is: 80,912.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,380.63 : 123,571.60 = 53,941.55 : x
  2. Step 2: Convert to fraction form
    82,380.63/123,571.60 = 53,941.55/x
  3. Step 3: Cross multiply
    82,380.63x = 123,571.60 × 53,941.55
  4. Step 4: Simplify right side
    82,380.63x = 6,665,643,814.06
  5. Step 5: Solve for x
    x = 6,665,643,814.06/82,380.63
  6. Step 6: Final answer
    x = 80,912.76

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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.