Finding the Fourth Proportional to 83,519,728.39, 115,259,846.20 and 48,236,878.05
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Solution
The fourth proportional to 83,519,728.39, 115,259,846.20 and 48,236,878.05 is: 66,568,405.47
Step by Step Solution
- Step 1: Write the proportion equation
83,519,728.39 : 115,259,846.20 = 48,236,878.05 : x - Step 2: Convert to fraction form
83,519,728.39/115,259,846.20 = 48,236,878.05/x - Step 3: Cross multiply
83,519,728.39x = 115,259,846.20 × 48,236,878.05 - Step 4: Simplify right side
83,519,728.39x = 5,559,775,144,658,340 - Step 5: Solve for x
x = 5,559,775,144,658,340/83,519,728.39 - Step 6: Final answer
x = 66,568,405.47
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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.