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Finding the Fourth Proportional to 69,281.80, 103,908.30 and 29,840.20

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Solution

The fourth proportional to 69,281.80, 103,908.30 and 29,840.20 is: 44,754.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,281.80 : 103,908.30 = 29,840.20 : x
  2. Step 2: Convert to fraction form
    69,281.80/103,908.30 = 29,840.20/x
  3. Step 3: Cross multiply
    69,281.80x = 103,908.30 × 29,840.20
  4. Step 4: Simplify right side
    69,281.80x = 3,100,644,453.66
  5. Step 5: Solve for x
    x = 3,100,644,453.66/69,281.80
  6. Step 6: Final answer
    x = 44,754.10

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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.