Finding the Fourth Proportional to 81,269.06, 121,873.27 and 27,945.95
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Solution
The fourth proportional to 81,269.06, 121,873.27 and 27,945.95 is: 41,908.50
Step by Step Solution
- Step 1: Write the proportion equation
81,269.06 : 121,873.27 = 27,945.95 : x - Step 2: Convert to fraction form
81,269.06/121,873.27 = 27,945.95/x - Step 3: Cross multiply
81,269.06x = 121,873.27 × 27,945.95 - Step 4: Simplify right side
81,269.06x = 3,405,864,309.76 - Step 5: Solve for x
x = 3,405,864,309.76/81,269.06 - Step 6: Final answer
x = 41,908.50
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1.5x scale
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.