Finding the Fourth Proportional to 77,699.83, 107,222.65 and 43,708.99
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Solution
The fourth proportional to 77,699.83, 107,222.65 and 43,708.99 is: 60,316.65
Step by Step Solution
- Step 1: Write the proportion equation
77,699.83 : 107,222.65 = 43,708.99 : x - Step 2: Convert to fraction form
77,699.83/107,222.65 = 43,708.99/x - Step 3: Cross multiply
77,699.83x = 107,222.65 × 43,708.99 - Step 4: Simplify right side
77,699.83x = 4,686,593,736.62 - Step 5: Solve for x
x = 4,686,593,736.62/77,699.83 - Step 6: Final answer
x = 60,316.65
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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.