Finding the Fourth Proportional to 104,538.69, 144,263.61 and 56,790.99
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Solution
The fourth proportional to 104,538.69, 144,263.61 and 56,790.99 is: 78,371.68
Step by Step Solution
- Step 1: Write the proportion equation
104,538.69 : 144,263.61 = 56,790.99 : x - Step 2: Convert to fraction form
104,538.69/144,263.61 = 56,790.99/x - Step 3: Cross multiply
104,538.69x = 144,263.61 × 56,790.99 - Step 4: Simplify right side
104,538.69x = 8,192,873,232.87 - Step 5: Solve for x
x = 8,192,873,232.87/104,538.69 - Step 6: Final answer
x = 78,371.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.