Home / 69,431.69-104,063.76-31,940.33

Finding the Fourth Proportional to 69,431.69, 104,063.76 and 31,940.33

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Solution

The fourth proportional to 69,431.69, 104,063.76 and 31,940.33 is: 47,871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,431.69 : 104,063.76 = 31,940.33 : x
  2. Step 2: Convert to fraction form
    69,431.69/104,063.76 = 31,940.33/x
  3. Step 3: Cross multiply
    69,431.69x = 104,063.76 × 31,940.33
  4. Step 4: Simplify right side
    69,431.69x = 3,323,831,095.60
  5. Step 5: Solve for x
    x = 3,323,831,095.60/69,431.69
  6. Step 6: Final answer
    x = 47,871.96

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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.