Finding the Fourth Proportional to 90,438.27, 124,661.01 and 71,286.99
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Solution
The fourth proportional to 90,438.27, 124,661.01 and 71,286.99 is: 98,262.70
Step by Step Solution
- Step 1: Write the proportion equation
90,438.27 : 124,661.01 = 71,286.99 : x - Step 2: Convert to fraction form
90,438.27/124,661.01 = 71,286.99/x - Step 3: Cross multiply
90,438.27x = 124,661.01 × 71,286.99 - Step 4: Simplify right side
90,438.27x = 8,886,708,173.26 - Step 5: Solve for x
x = 8,886,708,173.26/90,438.27 - Step 6: Final answer
x = 98,262.70
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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.