Finding the Fourth Proportional to 68,006.40, 101,879.68 and 39,857.28
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Solution
The fourth proportional to 68,006.40, 101,879.68 and 39,857.28 is: 59,709.78
Step by Step Solution
- Step 1: Write the proportion equation
68,006.40 : 101,879.68 = 39,857.28 : x - Step 2: Convert to fraction form
68,006.40/101,879.68 = 39,857.28/x - Step 3: Cross multiply
68,006.40x = 101,879.68 × 39,857.28 - Step 4: Simplify right side
68,006.40x = 4,060,646,932.07 - Step 5: Solve for x
x = 4,060,646,932.07/68,006.40 - Step 6: Final answer
x = 59,709.78
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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.