Finding the Fourth Proportional to 91,313.74, 136,944.69 and 28,982.62
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Solution
The fourth proportional to 91,313.74, 136,944.69 and 28,982.62 is: 43,465.70
Step by Step Solution
- Step 1: Write the proportion equation
91,313.74 : 136,944.69 = 28,982.62 : x - Step 2: Convert to fraction form
91,313.74/136,944.69 = 28,982.62/x - Step 3: Cross multiply
91,313.74x = 136,944.69 × 28,982.62 - Step 4: Simplify right side
91,313.74x = 3,969,015,911.29 - Step 5: Solve for x
x = 3,969,015,911.29/91,313.74 - Step 6: Final answer
x = 43,465.70
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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.