Finding the Fourth Proportional to 77,672.14, 107,186.52 and 43,680.62
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Solution
The fourth proportional to 77,672.14, 107,186.52 and 43,680.62 is: 60,278.67
Step by Step Solution
- Step 1: Write the proportion equation
77,672.14 : 107,186.52 = 43,680.62 : x - Step 2: Convert to fraction form
77,672.14/107,186.52 = 43,680.62/x - Step 3: Cross multiply
77,672.14x = 107,186.52 × 43,680.62 - Step 4: Simplify right side
77,672.14x = 4,681,973,113.31 - Step 5: Solve for x
x = 4,681,973,113.31/77,672.14 - Step 6: Final answer
x = 60,278.67
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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.