Finding the Fourth Proportional to 76,679.75, 115,043.09 and 39,266.31
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Solution
The fourth proportional to 76,679.75, 115,043.09 and 39,266.31 is: 58,911.48
Step by Step Solution
- Step 1: Write the proportion equation
76,679.75 : 115,043.09 = 39,266.31 : x - Step 2: Convert to fraction form
76,679.75/115,043.09 = 39,266.31/x - Step 3: Cross multiply
76,679.75x = 115,043.09 × 39,266.31 - Step 4: Simplify right side
76,679.75x = 4,517,317,445.86 - Step 5: Solve for x
x = 4,517,317,445.86/76,679.75 - Step 6: Final answer
x = 58,911.48
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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.