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Finding the Fourth Proportional to 110,740.80, 166,111.20 and 40,647.45

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Solution

The fourth proportional to 110,740.80, 166,111.20 and 40,647.45 is: 60,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,740.80 : 166,111.20 = 40,647.45 : x
  2. Step 2: Convert to fraction form
    110,740.80/166,111.20 = 40,647.45/x
  3. Step 3: Cross multiply
    110,740.80x = 166,111.20 × 40,647.45
  4. Step 4: Simplify right side
    110,740.80x = 6,751,996,696.44
  5. Step 5: Solve for x
    x = 6,751,996,696.44/110,740.80
  6. Step 6: Final answer
    x = 60,971.18

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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.