Finding the Fourth Proportional to 68,740.60, 103,110.82 and 18,821.08
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Solution
The fourth proportional to 68,740.60, 103,110.82 and 18,821.08 is: 28,231.60
Step by Step Solution
- Step 1: Write the proportion equation
68,740.60 : 103,110.82 = 18,821.08 : x - Step 2: Convert to fraction form
68,740.60/103,110.82 = 18,821.08/x - Step 3: Cross multiply
68,740.60x = 103,110.82 × 18,821.08 - Step 4: Simplify right side
68,740.60x = 1,940,656,992.09 - Step 5: Solve for x
x = 1,940,656,992.09/68,740.60 - Step 6: Final answer
x = 28,231.60
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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.