Finding the Fourth Proportional to 77,672.51, 107,187.05 and 43,680.99
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Solution
The fourth proportional to 77,672.51, 107,187.05 and 43,680.99 is: 60,279.20
Step by Step Solution
- Step 1: Write the proportion equation
77,672.51 : 107,187.05 = 43,680.99 : x - Step 2: Convert to fraction form
77,672.51/107,187.05 = 43,680.99/x - Step 3: Cross multiply
77,672.51x = 107,187.05 × 43,680.99 - Step 4: Simplify right side
77,672.51x = 4,682,036,240.77 - Step 5: Solve for x
x = 4,682,036,240.77/77,672.51 - Step 6: Final answer
x = 60,279.20
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.