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Finding the Fourth Proportional to 68,883.16, 103,311.10 and 18,950.36

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Solution

The fourth proportional to 68,883.16, 103,311.10 and 18,950.36 is: 28,421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,883.16 : 103,311.10 = 18,950.36 : x
  2. Step 2: Convert to fraction form
    68,883.16/103,311.10 = 18,950.36/x
  3. Step 3: Cross multiply
    68,883.16x = 103,311.10 × 18,950.36
  4. Step 4: Simplify right side
    68,883.16x = 1,957,782,537.00
  5. Step 5: Solve for x
    x = 1,957,782,537.00/68,883.16
  6. Step 6: Final answer
    x = 28,421.79

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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.