Finding the Fourth Proportional to 81,037.93, 121,555.92 and 21,061.09
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Solution
The fourth proportional to 81,037.93, 121,555.92 and 21,061.09 is: 31,591.38
Step by Step Solution
- Step 1: Write the proportion equation
81,037.93 : 121,555.92 = 21,061.09 : x - Step 2: Convert to fraction form
81,037.93/121,555.92 = 21,061.09/x - Step 3: Cross multiply
81,037.93x = 121,555.92 × 21,061.09 - Step 4: Simplify right side
81,037.93x = 2,560,100,171.15 - Step 5: Solve for x
x = 2,560,100,171.15/81,037.93 - Step 6: Final answer
x = 31,591.38
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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.