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Finding the Fourth Proportional to 71,382.80, 107,025.60 and 27,002.90

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Solution

The fourth proportional to 71,382.80, 107,025.60 and 27,002.90 is: 40,485.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,382.80 : 107,025.60 = 27,002.90 : x
  2. Step 2: Convert to fraction form
    71,382.80/107,025.60 = 27,002.90/x
  3. Step 3: Cross multiply
    71,382.80x = 107,025.60 × 27,002.90
  4. Step 4: Simplify right side
    71,382.80x = 2,890,001,574.24
  5. Step 5: Solve for x
    x = 2,890,001,574.24/71,382.80
  6. Step 6: Final answer
    x = 40,485.97

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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.