Finding the Fourth Proportional to 80,877.11, 121,258.17 and 30,915.09
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Solution
The fourth proportional to 80,877.11, 121,258.17 and 30,915.09 is: 46,350.66
Step by Step Solution
- Step 1: Write the proportion equation
80,877.11 : 121,258.17 = 30,915.09 : x - Step 2: Convert to fraction form
80,877.11/121,258.17 = 30,915.09/x - Step 3: Cross multiply
80,877.11x = 121,258.17 × 30,915.09 - Step 4: Simplify right side
80,877.11x = 3,748,707,238.79 - Step 5: Solve for x
x = 3,748,707,238.79/80,877.11 - Step 6: Final answer
x = 46,350.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.