Finding the Fourth Proportional to 77,099.36, 115,653.04 and 21,699.68
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Solution
The fourth proportional to 77,099.36, 115,653.04 and 21,699.68 is: 32,550.65
Step by Step Solution
- Step 1: Write the proportion equation
77,099.36 : 115,653.04 = 21,699.68 : x - Step 2: Convert to fraction form
77,099.36/115,653.04 = 21,699.68/x - Step 3: Cross multiply
77,099.36x = 115,653.04 × 21,699.68 - Step 4: Simplify right side
77,099.36x = 2,509,633,959.03 - Step 5: Solve for x
x = 2,509,633,959.03/77,099.36 - Step 6: Final answer
x = 32,550.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.