Finding the Fourth Proportional to 77,716.20, 107,152.74 and 57,544.68
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Solution
The fourth proportional to 77,716.20, 107,152.74 and 57,544.68 is: 79,340.86
Step by Step Solution
- Step 1: Write the proportion equation
77,716.20 : 107,152.74 = 57,544.68 : x - Step 2: Convert to fraction form
77,716.20/107,152.74 = 57,544.68/x - Step 3: Cross multiply
77,716.20x = 107,152.74 × 57,544.68 - Step 4: Simplify right side
77,716.20x = 6,166,070,134.42 - Step 5: Solve for x
x = 6,166,070,134.42/77,716.20 - Step 6: Final answer
x = 79,340.86
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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.