Finding the Fourth Proportional to 81,167.75, 121,778.97 and 51,147.12
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Solution
The fourth proportional to 81,167.75, 121,778.97 and 51,147.12 is: 76,737.92
Step by Step Solution
- Step 1: Write the proportion equation
81,167.75 : 121,778.97 = 51,147.12 : x - Step 2: Convert to fraction form
81,167.75/121,778.97 = 51,147.12/x - Step 3: Cross multiply
81,167.75x = 121,778.97 × 51,147.12 - Step 4: Simplify right side
81,167.75x = 6,228,643,592.07 - Step 5: Solve for x
x = 6,228,643,592.07/81,167.75 - Step 6: Final answer
x = 76,737.92
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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.