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Finding the Fourth Proportional to 69,555, 104,352.66 and 20,307

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Solution

The fourth proportional to 69,555, 104,352.66 and 20,307 is: 30,466.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,555 : 104,352.66 = 20,307 : x
  2. Step 2: Convert to fraction form
    69,555/104,352.66 = 20,307/x
  3. Step 3: Cross multiply
    69,555x = 104,352.66 × 20,307
  4. Step 4: Simplify right side
    69,555x = 2,119,089,466.62
  5. Step 5: Solve for x
    x = 2,119,089,466.62/69,555
  6. Step 6: Final answer
    x = 30,466.39

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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.