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Finding the Fourth Proportional to 68,364.81, 102,554.37 and 18,445.32

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Solution

The fourth proportional to 68,364.81, 102,554.37 and 18,445.32 is: 27,669.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,364.81 : 102,554.37 = 18,445.32 : x
  2. Step 2: Convert to fraction form
    68,364.81/102,554.37 = 18,445.32/x
  3. Step 3: Cross multiply
    68,364.81x = 102,554.37 × 18,445.32
  4. Step 4: Simplify right side
    68,364.81x = 1,891,648,172.05
  5. Step 5: Solve for x
    x = 1,891,648,172.05/68,364.81
  6. Step 6: Final answer
    x = 27,669.91

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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.