Finding the Fourth Proportional to 77,238.15, 115,859.39 and 27,311.19
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Solution
The fourth proportional to 77,238.15, 115,859.39 and 27,311.19 is: 40,967.55
Step by Step Solution
- Step 1: Write the proportion equation
77,238.15 : 115,859.39 = 27,311.19 : x - Step 2: Convert to fraction form
77,238.15/115,859.39 = 27,311.19/x - Step 3: Cross multiply
77,238.15x = 115,859.39 × 27,311.19 - Step 4: Simplify right side
77,238.15x = 3,164,257,677.02 - Step 5: Solve for x
x = 3,164,257,677.02/77,238.15 - Step 6: Final answer
x = 40,967.55
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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.