Finding the Fourth Proportional to 91,278.11, 136,932.73 and 40,695.49
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Solution
The fourth proportional to 91,278.11, 136,932.73 and 40,695.49 is: 61,050.17
Step by Step Solution
- Step 1: Write the proportion equation
91,278.11 : 136,932.73 = 40,695.49 : x - Step 2: Convert to fraction form
91,278.11/136,932.73 = 40,695.49/x - Step 3: Cross multiply
91,278.11x = 136,932.73 × 40,695.49 - Step 4: Simplify right side
91,278.11x = 5,572,544,176.62 - Step 5: Solve for x
x = 5,572,544,176.62/91,278.11 - Step 6: Final answer
x = 61,050.17
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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.