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Finding the Fourth Proportional to 68,224.39, 102,347.53 and 28,787.32

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Solution

The fourth proportional to 68,224.39, 102,347.53 and 28,787.32 is: 43,185.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,224.39 : 102,347.53 = 28,787.32 : x
  2. Step 2: Convert to fraction form
    68,224.39/102,347.53 = 28,787.32/x
  3. Step 3: Cross multiply
    68,224.39x = 102,347.53 × 28,787.32
  4. Step 4: Simplify right side
    68,224.39x = 2,946,310,739.51
  5. Step 5: Solve for x
    x = 2,946,310,739.51/68,224.39
  6. Step 6: Final answer
    x = 43,185.59

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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.