Finding the Fourth Proportional to 76,718.52, 115,105.40 and 26,805.96
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Solution
The fourth proportional to 76,718.52, 115,105.40 and 26,805.96 is: 40,218.59
Step by Step Solution
- Step 1: Write the proportion equation
76,718.52 : 115,105.40 = 26,805.96 : x - Step 2: Convert to fraction form
76,718.52/115,105.40 = 26,805.96/x - Step 3: Cross multiply
76,718.52x = 115,105.40 × 26,805.96 - Step 4: Simplify right side
76,718.52x = 3,085,510,748.18 - Step 5: Solve for x
x = 3,085,510,748.18/76,718.52 - Step 6: Final answer
x = 40,218.59
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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.