Home / 68,978,928.37-103,468,766.17-20,457,202.57

Finding the Fourth Proportional to 68,978,928.37, 103,468,766.17 and 20,457,202.57

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Solution

The fourth proportional to 68,978,928.37, 103,468,766.17 and 20,457,202.57 is: 30,685,914.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,978,928.37 : 103,468,766.17 = 20,457,202.57 : x
  2. Step 2: Convert to fraction form
    68,978,928.37/103,468,766.17 = 20,457,202.57/x
  3. Step 3: Cross multiply
    68,978,928.37x = 103,468,766.17 × 20,457,202.57
  4. Step 4: Simplify right side
    68,978,928.37x = 2,116,681,508,878,608.25
  5. Step 5: Solve for x
    x = 2,116,681,508,878,608.25/68,978,928.37
  6. Step 6: Final answer
    x = 30,685,914.65

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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.