Finding the Fourth Proportional to 80,754.44, 121,328.76 and 76,278.38
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Solution
The fourth proportional to 80,754.44, 121,328.76 and 76,278.38 is: 114,603.75
Step by Step Solution
- Step 1: Write the proportion equation
80,754.44 : 121,328.76 = 76,278.38 : x - Step 2: Convert to fraction form
80,754.44/121,328.76 = 76,278.38/x - Step 3: Cross multiply
80,754.44x = 121,328.76 × 76,278.38 - Step 4: Simplify right side
80,754.44x = 9,254,761,260.21 - Step 5: Solve for x
x = 9,254,761,260.21/80,754.44 - Step 6: Final answer
x = 114,603.75
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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.