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Finding the Fourth Proportional to 68,522.66, 102,795.06 and 21,126.66

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Solution

The fourth proportional to 68,522.66, 102,795.06 and 21,126.66 is: 31,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,522.66 : 102,795.06 = 21,126.66 : x
  2. Step 2: Convert to fraction form
    68,522.66/102,795.06 = 21,126.66/x
  3. Step 3: Cross multiply
    68,522.66x = 102,795.06 × 21,126.66
  4. Step 4: Simplify right side
    68,522.66x = 2,171,716,282.30
  5. Step 5: Solve for x
    x = 2,171,716,282.30/68,522.66
  6. Step 6: Final answer
    x = 31,693.41

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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.