Finding the Fourth Proportional to 115,571.05, 159,476.16 and 79,303.60
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Solution
The fourth proportional to 115,571.05, 159,476.16 and 79,303.60 is: 109,430.82
Step by Step Solution
- Step 1: Write the proportion equation
115,571.05 : 159,476.16 = 79,303.60 : x - Step 2: Convert to fraction form
115,571.05/159,476.16 = 79,303.60/x - Step 3: Cross multiply
115,571.05x = 159,476.16 × 79,303.60 - Step 4: Simplify right side
115,571.05x = 12,647,034,098.91 - Step 5: Solve for x
x = 12,647,034,098.91/115,571.05 - Step 6: Final answer
x = 109,430.82
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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.