Finding the Fourth Proportional to 85,517,552.70, 128,276,329.05 and 74,755,872.45
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Solution
The fourth proportional to 85,517,552.70, 128,276,329.05 and 74,755,872.45 is: 112,133,808.68
Step by Step Solution
- Step 1: Write the proportion equation
85,517,552.70 : 128,276,329.05 = 74,755,872.45 : x - Step 2: Convert to fraction form
85,517,552.70/128,276,329.05 = 74,755,872.45/x - Step 3: Cross multiply
85,517,552.70x = 128,276,329.05 × 74,755,872.45 - Step 4: Simplify right side
85,517,552.70x = 9,589,408,892,816,030 - Step 5: Solve for x
x = 9,589,408,892,816,030/85,517,552.70 - Step 6: Final answer
x = 112,133,808.68
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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.