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Finding the Fourth Proportional to 69,378.80, 104,116.80 and 29,964.20

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Solution

The fourth proportional to 69,378.80, 104,116.80 and 29,964.20 is: 44,967.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,378.80 : 104,116.80 = 29,964.20 : x
  2. Step 2: Convert to fraction form
    69,378.80/104,116.80 = 29,964.20/x
  3. Step 3: Cross multiply
    69,378.80x = 104,116.80 × 29,964.20
  4. Step 4: Simplify right side
    69,378.80x = 3,119,776,618.56
  5. Step 5: Solve for x
    x = 3,119,776,618.56/69,378.80
  6. Step 6: Final answer
    x = 44,967.29

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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.