Finding the Fourth Proportional to 91,392.81, 125,841.69 and 79,998.54
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Solution
The fourth proportional to 91,392.81, 125,841.69 and 79,998.54 is: 110,152.55
Step by Step Solution
- Step 1: Write the proportion equation
91,392.81 : 125,841.69 = 79,998.54 : x - Step 2: Convert to fraction form
91,392.81/125,841.69 = 79,998.54/x - Step 3: Cross multiply
91,392.81x = 125,841.69 × 79,998.54 - Step 4: Simplify right side
91,392.81x = 10,067,151,471.13 - Step 5: Solve for x
x = 10,067,151,471.13/91,392.81 - Step 6: Final answer
x = 110,152.55
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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.