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Finding the Fourth Proportional to 68,334.59, 102,513.99 and 20,948.60

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Solution

The fourth proportional to 68,334.59, 102,513.99 and 20,948.60 is: 31,426.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,334.59 : 102,513.99 = 20,948.60 : x
  2. Step 2: Convert to fraction form
    68,334.59/102,513.99 = 20,948.60/x
  3. Step 3: Cross multiply
    68,334.59x = 102,513.99 × 20,948.60
  4. Step 4: Simplify right side
    68,334.59x = 2,147,524,570.91
  5. Step 5: Solve for x
    x = 2,147,524,570.91/68,334.59
  6. Step 6: Final answer
    x = 31,426.61

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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.