Finding the Fourth Proportional to 78,655.82, 117,938.16 and 53,725.99
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Solution
The fourth proportional to 78,655.82, 117,938.16 and 53,725.99 is: 80,557.87
Step by Step Solution
- Step 1: Write the proportion equation
78,655.82 : 117,938.16 = 53,725.99 : x - Step 2: Convert to fraction form
78,655.82/117,938.16 = 53,725.99/x - Step 3: Cross multiply
78,655.82x = 117,938.16 × 53,725.99 - Step 4: Simplify right side
78,655.82x = 6,336,344,833.94 - Step 5: Solve for x
x = 6,336,344,833.94/78,655.82 - Step 6: Final answer
x = 80,557.87
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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.