Finding the Fourth Proportional to 80,931,661.80, 121,397,492.70 and 26,349,390.60
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Solution
The fourth proportional to 80,931,661.80, 121,397,492.70 and 26,349,390.60 is: 39,524,085.90
Step by Step Solution
- Step 1: Write the proportion equation
80,931,661.80 : 121,397,492.70 = 26,349,390.60 : x - Step 2: Convert to fraction form
80,931,661.80/121,397,492.70 = 26,349,390.60/x - Step 3: Cross multiply
80,931,661.80x = 121,397,492.70 × 26,349,390.60 - Step 4: Simplify right side
80,931,661.80x = 3,198,749,953,012,949 - Step 5: Solve for x
x = 3,198,749,953,012,949/80,931,661.80 - Step 6: Final answer
x = 39,524,085.90
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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.