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Finding the Fourth Proportional to 68,787.81, 103,164.39 and 26,653.41

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Solution

The fourth proportional to 68,787.81, 103,164.39 and 26,653.41 is: 39,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,787.81 : 103,164.39 = 26,653.41 : x
  2. Step 2: Convert to fraction form
    68,787.81/103,164.39 = 26,653.41/x
  3. Step 3: Cross multiply
    68,787.81x = 103,164.39 × 26,653.41
  4. Step 4: Simplify right side
    68,787.81x = 2,749,682,784.07
  5. Step 5: Solve for x
    x = 2,749,682,784.07/68,787.81
  6. Step 6: Final answer
    x = 39,973.40

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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.