Finding the Fourth Proportional to 100,535.36, 138,740.42 and 54,594.99
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Solution
The fourth proportional to 100,535.36, 138,740.42 and 54,594.99 is: 75,341.97
Step by Step Solution
- Step 1: Write the proportion equation
100,535.36 : 138,740.42 = 54,594.99 : x - Step 2: Convert to fraction form
100,535.36/138,740.42 = 54,594.99/x - Step 3: Cross multiply
100,535.36x = 138,740.42 × 54,594.99 - Step 4: Simplify right side
100,535.36x = 7,574,531,978.98 - Step 5: Solve for x
x = 7,574,531,978.98/100,535.36 - Step 6: Final answer
x = 75,341.97
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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.