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Finding the Fourth Proportional to 69,235.17, 103,843.50 and 19,311.09

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Solution

The fourth proportional to 69,235.17, 103,843.50 and 19,311.09 is: 28,964.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,235.17 : 103,843.50 = 19,311.09 : x
  2. Step 2: Convert to fraction form
    69,235.17/103,843.50 = 19,311.09/x
  3. Step 3: Cross multiply
    69,235.17x = 103,843.50 × 19,311.09
  4. Step 4: Simplify right side
    69,235.17x = 2,005,330,963.08
  5. Step 5: Solve for x
    x = 2,005,330,963.08/69,235.17
  6. Step 6: Final answer
    x = 28,964.05

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1.5x scale

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.