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Finding the Fourth Proportional to 69,608, 104,415.84 and 20,363.84

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Solution

The fourth proportional to 69,608, 104,415.84 and 20,363.84 is: 30,546.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,608 : 104,415.84 = 20,363.84 : x
  2. Step 2: Convert to fraction form
    69,608/104,415.84 = 20,363.84/x
  3. Step 3: Cross multiply
    69,608x = 104,415.84 × 20,363.84
  4. Step 4: Simplify right side
    69,608x = 2,126,307,459.23
  5. Step 5: Solve for x
    x = 2,126,307,459.23/69,608
  6. Step 6: Final answer
    x = 30,546.88

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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.