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Finding the Fourth Proportional to 68,519.99, 102,797.67 and 21,134.01

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Solution

The fourth proportional to 68,519.99, 102,797.67 and 21,134.01 is: 31,706.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,519.99 : 102,797.67 = 21,134.01 : x
  2. Step 2: Convert to fraction form
    68,519.99/102,797.67 = 21,134.01/x
  3. Step 3: Cross multiply
    68,519.99x = 102,797.67 × 21,134.01
  4. Step 4: Simplify right side
    68,519.99x = 2,172,526,985.76
  5. Step 5: Solve for x
    x = 2,172,526,985.76/68,519.99
  6. Step 6: Final answer
    x = 31,706.47

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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.