Finding the Fourth Proportional to 76,021.67, 114,030.18 and 31,647.31
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Solution
The fourth proportional to 76,021.67, 114,030.18 and 31,647.31 is: 47,469.99
Step by Step Solution
- Step 1: Write the proportion equation
76,021.67 : 114,030.18 = 31,647.31 : x - Step 2: Convert to fraction form
76,021.67/114,030.18 = 31,647.31/x - Step 3: Cross multiply
76,021.67x = 114,030.18 × 31,647.31 - Step 4: Simplify right side
76,021.67x = 3,608,748,170.74 - Step 5: Solve for x
x = 3,608,748,170.74/76,021.67 - Step 6: Final answer
x = 47,469.99
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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.