Finding the Fourth Proportional to 84,245,419.80, 126,368,129.70 and 73,831,800.60
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Solution
The fourth proportional to 84,245,419.80, 126,368,129.70 and 73,831,800.60 is: 110,747,700.90
Step by Step Solution
- Step 1: Write the proportion equation
84,245,419.80 : 126,368,129.70 = 73,831,800.60 : x - Step 2: Convert to fraction form
84,245,419.80/126,368,129.70 = 73,831,800.60/x - Step 3: Cross multiply
84,245,419.80x = 126,368,129.70 × 73,831,800.60 - Step 4: Simplify right side
84,245,419.80x = 9,329,986,554,205,338 - Step 5: Solve for x
x = 9,329,986,554,205,338/84,245,419.80 - Step 6: Final answer
x = 110,747,700.90
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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.