Finding the Fourth Proportional to 81,641.71, 122,436.64 and 26,224.75
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Solution
The fourth proportional to 81,641.71, 122,436.64 and 26,224.75 is: 39,328.80
Step by Step Solution
- Step 1: Write the proportion equation
81,641.71 : 122,436.64 = 26,224.75 : x - Step 2: Convert to fraction form
81,641.71/122,436.64 = 26,224.75/x - Step 3: Cross multiply
81,641.71x = 122,436.64 × 26,224.75 - Step 4: Simplify right side
81,641.71x = 3,210,870,274.84 - Step 5: Solve for x
x = 3,210,870,274.84/81,641.71 - Step 6: Final answer
x = 39,328.80
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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.