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Finding the Fourth Proportional to 68,709.81, 103,063.41 and 21,962.67

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Solution

The fourth proportional to 68,709.81, 103,063.41 and 21,962.67 is: 32,943.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,709.81 : 103,063.41 = 21,962.67 : x
  2. Step 2: Convert to fraction form
    68,709.81/103,063.41 = 21,962.67/x
  3. Step 3: Cross multiply
    68,709.81x = 103,063.41 × 21,962.67
  4. Step 4: Simplify right side
    68,709.81x = 2,263,547,662.90
  5. Step 5: Solve for x
    x = 2,263,547,662.90/68,709.81
  6. Step 6: Final answer
    x = 32,943.59

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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.