Finding the Fourth Proportional to 87,948,553.63, 121,369,146.79 and 48,790,331.39
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Solution
The fourth proportional to 87,948,553.63, 121,369,146.79 and 48,790,331.39 is: 67,330,736.53
Step by Step Solution
- Step 1: Write the proportion equation
87,948,553.63 : 121,369,146.79 = 48,790,331.39 : x - Step 2: Convert to fraction form
87,948,553.63/121,369,146.79 = 48,790,331.39/x - Step 3: Cross multiply
87,948,553.63x = 121,369,146.79 × 48,790,331.39 - Step 4: Simplify right side
87,948,553.63x = 5,921,640,892,405,655 - Step 5: Solve for x
x = 5,921,640,892,405,655/87,948,553.63 - Step 6: Final answer
x = 67,330,736.53
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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.