Finding the Fourth Proportional to 90,416.16, 124,749.57 and 54,102.99
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Solution
The fourth proportional to 90,416.16, 124,749.57 and 54,102.99 is: 74,647.33
Step by Step Solution
- Step 1: Write the proportion equation
90,416.16 : 124,749.57 = 54,102.99 : x - Step 2: Convert to fraction form
90,416.16/124,749.57 = 54,102.99/x - Step 3: Cross multiply
90,416.16x = 124,749.57 × 54,102.99 - Step 4: Simplify right side
90,416.16x = 6,749,324,738.21 - Step 5: Solve for x
x = 6,749,324,738.21/90,416.16 - Step 6: Final answer
x = 74,647.33
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1.5x scale
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.