Finding the Fourth Proportional to 100,091.66, 138,176.48 and 57,641.99
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Solution
The fourth proportional to 100,091.66, 138,176.48 and 57,641.99 is: 79,574.73
Step by Step Solution
- Step 1: Write the proportion equation
100,091.66 : 138,176.48 = 57,641.99 : x - Step 2: Convert to fraction form
100,091.66/138,176.48 = 57,641.99/x - Step 3: Cross multiply
100,091.66x = 138,176.48 × 57,641.99 - Step 4: Simplify right side
100,091.66x = 7,964,766,990.19 - Step 5: Solve for x
x = 7,964,766,990.19/100,091.66 - Step 6: Final answer
x = 79,574.73
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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.