Finding the Fourth Proportional to 91,087.90, 136,647.42 and 31,113.08
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Solution
The fourth proportional to 91,087.90, 136,647.42 and 31,113.08 is: 46,674.94
Step by Step Solution
- Step 1: Write the proportion equation
91,087.90 : 136,647.42 = 31,113.08 : x - Step 2: Convert to fraction form
91,087.90/136,647.42 = 31,113.08/x - Step 3: Cross multiply
91,087.90x = 136,647.42 × 31,113.08 - Step 4: Simplify right side
91,087.90x = 4,251,522,451.87 - Step 5: Solve for x
x = 4,251,522,451.87/91,087.90 - Step 6: Final answer
x = 46,674.94
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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.