Finding the Fourth Proportional to 76,960.38, 115,439.34 and 39,498.84
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Solution
The fourth proportional to 76,960.38, 115,439.34 and 39,498.84 is: 59,247.63
Step by Step Solution
- Step 1: Write the proportion equation
76,960.38 : 115,439.34 = 39,498.84 : x - Step 2: Convert to fraction form
76,960.38/115,439.34 = 39,498.84/x - Step 3: Cross multiply
76,960.38x = 115,439.34 × 39,498.84 - Step 4: Simplify right side
76,960.38x = 4,559,720,020.37 - Step 5: Solve for x
x = 4,559,720,020.37/76,960.38 - Step 6: Final answer
x = 59,247.63
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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.