Finding the Fourth Proportional to 76,960.85, 115,232.75 and 39,947.09
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Solution
The fourth proportional to 76,960.85, 115,232.75 and 39,947.09 is: 59,812.40
Step by Step Solution
- Step 1: Write the proportion equation
76,960.85 : 115,232.75 = 39,947.09 : x - Step 2: Convert to fraction form
76,960.85/115,232.75 = 39,947.09/x - Step 3: Cross multiply
76,960.85x = 115,232.75 × 39,947.09 - Step 4: Simplify right side
76,960.85x = 4,603,212,835.46 - Step 5: Solve for x
x = 4,603,212,835.46/76,960.85 - Step 6: Final answer
x = 59,812.40
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1.5x scale
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.