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Finding the Fourth Proportional to 69,179.20, 103,768.80 and 34,114.30

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Solution

The fourth proportional to 69,179.20, 103,768.80 and 34,114.30 is: 51,171.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,179.20 : 103,768.80 = 34,114.30 : x
  2. Step 2: Convert to fraction form
    69,179.20/103,768.80 = 34,114.30/x
  3. Step 3: Cross multiply
    69,179.20x = 103,768.80 × 34,114.30
  4. Step 4: Simplify right side
    69,179.20x = 3,539,999,973.84
  5. Step 5: Solve for x
    x = 3,539,999,973.84/69,179.20
  6. Step 6: Final answer
    x = 51,171.45

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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.