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Finding the Fourth Proportional to 68,795.51, 103,186.34 and 18,880.62

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Solution

The fourth proportional to 68,795.51, 103,186.34 and 18,880.62 is: 28,319.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,795.51 : 103,186.34 = 18,880.62 : x
  2. Step 2: Convert to fraction form
    68,795.51/103,186.34 = 18,880.62/x
  3. Step 3: Cross multiply
    68,795.51x = 103,186.34 × 18,880.62
  4. Step 4: Simplify right side
    68,795.51x = 1,948,221,980.33
  5. Step 5: Solve for x
    x = 1,948,221,980.33/68,795.51
  6. Step 6: Final answer
    x = 28,319.03

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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.