Finding the Fourth Proportional to 78,513.39, 117,725.46 and 53,583.63
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Solution
The fourth proportional to 78,513.39, 117,725.46 and 53,583.63 is: 80,344.99
Step by Step Solution
- Step 1: Write the proportion equation
78,513.39 : 117,725.46 = 53,583.63 : x - Step 2: Convert to fraction form
78,513.39/117,725.46 = 53,583.63/x - Step 3: Cross multiply
78,513.39x = 117,725.46 × 53,583.63 - Step 4: Simplify right side
78,513.39x = 6,308,157,490.22 - Step 5: Solve for x
x = 6,308,157,490.22/78,513.39 - Step 6: Final answer
x = 80,344.99
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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.