Finding the Fourth Proportional to 81,035.09, 121,552.63 and 21,870.66
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Solution
The fourth proportional to 81,035.09, 121,552.63 and 21,870.66 is: 32,805.99
Step by Step Solution
- Step 1: Write the proportion equation
81,035.09 : 121,552.63 = 21,870.66 : x - Step 2: Convert to fraction form
81,035.09/121,552.63 = 21,870.66/x - Step 3: Cross multiply
81,035.09x = 121,552.63 × 21,870.66 - Step 4: Simplify right side
81,035.09x = 2,658,436,242.84 - Step 5: Solve for x
x = 2,658,436,242.84/81,035.09 - Step 6: Final answer
x = 32,805.99
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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.