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Finding the Fourth Proportional to 68,723.31, 103,078.47 and 21,963.63

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Solution

The fourth proportional to 68,723.31, 103,078.47 and 21,963.63 is: 32,943.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,723.31 : 103,078.47 = 21,963.63 : x
  2. Step 2: Convert to fraction form
    68,723.31/103,078.47 = 21,963.63/x
  3. Step 3: Cross multiply
    68,723.31x = 103,078.47 × 21,963.63
  4. Step 4: Simplify right side
    68,723.31x = 2,263,977,376.05
  5. Step 5: Solve for x
    x = 2,263,977,376.05/68,723.31
  6. Step 6: Final answer
    x = 32,943.37

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1.5x scale

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.