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Finding the Fourth Proportional to 68,787.80, 103,164.38 and 26,653.42

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Solution

The fourth proportional to 68,787.80, 103,164.38 and 26,653.42 is: 39,973.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,787.80 : 103,164.38 = 26,653.42 : x
  2. Step 2: Convert to fraction form
    68,787.80/103,164.38 = 26,653.42/x
  3. Step 3: Cross multiply
    68,787.80x = 103,164.38 × 26,653.42
  4. Step 4: Simplify right side
    68,787.80x = 2,749,683,549.18
  5. Step 5: Solve for x
    x = 2,749,683,549.18/68,787.80
  6. Step 6: Final answer
    x = 39,973.42

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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.