Finding the Fourth Proportional to 87,806.68, 121,173.36 and 47,520.47
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Solution
The fourth proportional to 87,806.68, 121,173.36 and 47,520.47 is: 65,578.33
Step by Step Solution
- Step 1: Write the proportion equation
87,806.68 : 121,173.36 = 47,520.47 : x - Step 2: Convert to fraction form
87,806.68/121,173.36 = 47,520.47/x - Step 3: Cross multiply
87,806.68x = 121,173.36 × 47,520.47 - Step 4: Simplify right side
87,806.68x = 5,758,214,781.08 - Step 5: Solve for x
x = 5,758,214,781.08/87,806.68 - Step 6: Final answer
x = 65,578.33
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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.