Finding the Fourth Proportional to 77,181.44, 115,809.42 and 67,205.12
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Solution
The fourth proportional to 77,181.44, 115,809.42 and 67,205.12 is: 100,840.12
Step by Step Solution
- Step 1: Write the proportion equation
77,181.44 : 115,809.42 = 67,205.12 : x - Step 2: Convert to fraction form
77,181.44/115,809.42 = 67,205.12/x - Step 3: Cross multiply
77,181.44x = 115,809.42 × 67,205.12 - Step 4: Simplify right side
77,181.44x = 7,782,985,968.23 - Step 5: Solve for x
x = 7,782,985,968.23/77,181.44 - Step 6: Final answer
x = 100,840.12
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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.