Finding the Fourth Proportional to 89,880,639.36, 124,120,945.81 and 84,984,004.49
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Solution
The fourth proportional to 89,880,639.36, 124,120,945.81 and 84,984,004.49 is: 117,358,922.80
Step by Step Solution
- Step 1: Write the proportion equation
89,880,639.36 : 124,120,945.81 = 84,984,004.49 : x - Step 2: Convert to fraction form
89,880,639.36/124,120,945.81 = 84,984,004.49/x - Step 3: Cross multiply
89,880,639.36x = 124,120,945.81 × 84,984,004.49 - Step 4: Simplify right side
89,880,639.36x = 10,548,295,015,726,282 - Step 5: Solve for x
x = 10,548,295,015,726,282/89,880,639.36 - Step 6: Final answer
x = 117,358,922.80
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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.