Finding the Fourth Proportional to 85,435.18, 117,896.79 and 47,708.62
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Solution
The fourth proportional to 85,435.18, 117,896.79 and 47,708.62 is: 65,835.80
Step by Step Solution
- Step 1: Write the proportion equation
85,435.18 : 117,896.79 = 47,708.62 : x - Step 2: Convert to fraction form
85,435.18/117,896.79 = 47,708.62/x - Step 3: Cross multiply
85,435.18x = 117,896.79 × 47,708.62 - Step 4: Simplify right side
85,435.18x = 5,624,693,153.33 - Step 5: Solve for x
x = 5,624,693,153.33/85,435.18 - Step 6: Final answer
x = 65,835.80
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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.