Finding the Fourth Proportional to 77,992.62, 107,629.74 and 42,182.70
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Solution
The fourth proportional to 77,992.62, 107,629.74 and 42,182.70 is: 58,212.09
Step by Step Solution
- Step 1: Write the proportion equation
77,992.62 : 107,629.74 = 42,182.70 : x - Step 2: Convert to fraction form
77,992.62/107,629.74 = 42,182.70/x - Step 3: Cross multiply
77,992.62x = 107,629.74 × 42,182.70 - Step 4: Simplify right side
77,992.62x = 4,540,113,033.50 - Step 5: Solve for x
x = 4,540,113,033.50/77,992.62 - Step 6: Final answer
x = 58,212.09
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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.