Finding the Fourth Proportional to 77,891.12, 107,489.62 and 44,357.12
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Solution
The fourth proportional to 77,891.12, 107,489.62 and 44,357.12 is: 61,212.75
Step by Step Solution
- Step 1: Write the proportion equation
77,891.12 : 107,489.62 = 44,357.12 : x - Step 2: Convert to fraction form
77,891.12/107,489.62 = 44,357.12/x - Step 3: Cross multiply
77,891.12x = 107,489.62 × 44,357.12 - Step 4: Simplify right side
77,891.12x = 4,767,929,973.09 - Step 5: Solve for x
x = 4,767,929,973.09/77,891.12 - Step 6: Final answer
x = 61,212.75
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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.