Finding the Fourth Proportional to 91,115.28, 136,536.84 and 74,591.28
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Solution
The fourth proportional to 91,115.28, 136,536.84 and 74,591.28 is: 111,775.52
Step by Step Solution
- Step 1: Write the proportion equation
91,115.28 : 136,536.84 = 74,591.28 : x - Step 2: Convert to fraction form
91,115.28/136,536.84 = 74,591.28/x - Step 3: Cross multiply
91,115.28x = 136,536.84 × 74,591.28 - Step 4: Simplify right side
91,115.28x = 10,184,457,662.76 - Step 5: Solve for x
x = 10,184,457,662.76/91,115.28 - Step 6: Final answer
x = 111,775.52
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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.