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Finding the Fourth Proportional to 69,766.40, 104,649.60 and 69,110.30

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Solution

The fourth proportional to 69,766.40, 104,649.60 and 69,110.30 is: 103,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,766.40 : 104,649.60 = 69,110.30 : x
  2. Step 2: Convert to fraction form
    69,766.40/104,649.60 = 69,110.30/x
  3. Step 3: Cross multiply
    69,766.40x = 104,649.60 × 69,110.30
  4. Step 4: Simplify right side
    69,766.40x = 7,232,365,250.88
  5. Step 5: Solve for x
    x = 7,232,365,250.88/69,766.40
  6. Step 6: Final answer
    x = 103,665.45

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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.