Finding the Fourth Proportional to 80,751.69, 121,324.64 and 76,275.63
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Solution
The fourth proportional to 80,751.69, 121,324.64 and 76,275.63 is: 114,599.62
Step by Step Solution
- Step 1: Write the proportion equation
80,751.69 : 121,324.64 = 76,275.63 : x - Step 2: Convert to fraction form
80,751.69/121,324.64 = 76,275.63/x - Step 3: Cross multiply
80,751.69x = 121,324.64 × 76,275.63 - Step 4: Simplify right side
80,751.69x = 9,254,112,969.15 - Step 5: Solve for x
x = 9,254,112,969.15/80,751.69 - Step 6: Final answer
x = 114,599.62
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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.