Finding the Fourth Proportional to 77,770.82, 107,318.16 and 43,777.55
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Solution
The fourth proportional to 77,770.82, 107,318.16 and 43,777.55 is: 60,409.88
Step by Step Solution
- Step 1: Write the proportion equation
77,770.82 : 107,318.16 = 43,777.55 : x - Step 2: Convert to fraction form
77,770.82/107,318.16 = 43,777.55/x - Step 3: Cross multiply
77,770.82x = 107,318.16 × 43,777.55 - Step 4: Simplify right side
77,770.82x = 4,698,125,578.72 - Step 5: Solve for x
x = 4,698,125,578.72/77,770.82 - Step 6: Final answer
x = 60,409.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.