Finding the Fourth Proportional to 87,991.24, 121,396.08 and 57,792.94
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Solution
The fourth proportional to 87,991.24, 121,396.08 and 57,792.94 is: 79,733.35
Step by Step Solution
- Step 1: Write the proportion equation
87,991.24 : 121,396.08 = 57,792.94 : x - Step 2: Convert to fraction form
87,991.24/121,396.08 = 57,792.94/x - Step 3: Cross multiply
87,991.24x = 121,396.08 × 57,792.94 - Step 4: Simplify right side
87,991.24x = 7,015,836,367.68 - Step 5: Solve for x
x = 7,015,836,367.68/87,991.24 - Step 6: Final answer
x = 79,733.35
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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.