Finding the Fourth Proportional to 86,021.28, 118,709.28 and 48,295.68
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Solution
The fourth proportional to 86,021.28, 118,709.28 and 48,295.68 is: 66,647.99
Step by Step Solution
- Step 1: Write the proportion equation
86,021.28 : 118,709.28 = 48,295.68 : x - Step 2: Convert to fraction form
86,021.28/118,709.28 = 48,295.68/x - Step 3: Cross multiply
86,021.28x = 118,709.28 × 48,295.68 - Step 4: Simplify right side
86,021.28x = 5,733,145,399.91 - Step 5: Solve for x
x = 5,733,145,399.91/86,021.28 - Step 6: Final answer
x = 66,647.99
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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.