Home / 71,783,998.20-107,675,997.30-28,659,857.40

Finding the Fourth Proportional to 71,783,998.20, 107,675,997.30 and 28,659,857.40

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Solution

The fourth proportional to 71,783,998.20, 107,675,997.30 and 28,659,857.40 is: 42,989,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,783,998.20 : 107,675,997.30 = 28,659,857.40 : x
  2. Step 2: Convert to fraction form
    71,783,998.20/107,675,997.30 = 28,659,857.40/x
  3. Step 3: Cross multiply
    71,783,998.20x = 107,675,997.30 × 28,659,857.40
  4. Step 4: Simplify right side
    71,783,998.20x = 3,085,978,728,020,785
  5. Step 5: Solve for x
    x = 3,085,978,728,020,785/71,783,998.20
  6. Step 6: Final answer
    x = 42,989,786.10

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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.