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Finding the Fourth Proportional to 69,108.72, 103,658.14 and 26,980.91

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Solution

The fourth proportional to 69,108.72, 103,658.14 and 26,980.91 is: 40,469.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,108.72 : 103,658.14 = 26,980.91 : x
  2. Step 2: Convert to fraction form
    69,108.72/103,658.14 = 26,980.91/x
  3. Step 3: Cross multiply
    69,108.72x = 103,658.14 × 26,980.91
  4. Step 4: Simplify right side
    69,108.72x = 2,796,790,946.11
  5. Step 5: Solve for x
    x = 2,796,790,946.11/69,108.72
  6. Step 6: Final answer
    x = 40,469.44

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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.