Home / 72,485,219.94-100,029,619.83-39,890,171.94

Finding the Fourth Proportional to 72,485,219.94, 100,029,619.83 and 39,890,171.94

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Solution

The fourth proportional to 72,485,219.94, 100,029,619.83 and 39,890,171.94 is: 55,048,446.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485,219.94 : 100,029,619.83 = 39,890,171.94 : x
  2. Step 2: Convert to fraction form
    72,485,219.94/100,029,619.83 = 39,890,171.94/x
  3. Step 3: Cross multiply
    72,485,219.94x = 100,029,619.83 × 39,890,171.94
  4. Step 4: Simplify right side
    72,485,219.94x = 3,990,198,733,661,429
  5. Step 5: Solve for x
    x = 3,990,198,733,661,429/72,485,219.94
  6. Step 6: Final answer
    x = 55,048,446.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.