Finding the Fourth Proportional to 77,687.60, 107,207.82 and 43,696.07
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Solution
The fourth proportional to 77,687.60, 107,207.82 and 43,696.07 is: 60,299.99
Step by Step Solution
- Step 1: Write the proportion equation
77,687.60 : 107,207.82 = 43,696.07 : x - Step 2: Convert to fraction form
77,687.60/107,207.82 = 43,696.07/x - Step 3: Cross multiply
77,687.60x = 107,207.82 × 43,696.07 - Step 4: Simplify right side
77,687.60x = 4,684,560,876.30 - Step 5: Solve for x
x = 4,684,560,876.30/77,687.60 - Step 6: Final answer
x = 60,299.99
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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.