Finding the Fourth Proportional to 71,994,920.70, 107,992,381.05 and 57,646,013.70
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Solution
The fourth proportional to 71,994,920.70, 107,992,381.05 and 57,646,013.70 is: 86,469,020.55
Step by Step Solution
- Step 1: Write the proportion equation
71,994,920.70 : 107,992,381.05 = 57,646,013.70 : x - Step 2: Convert to fraction form
71,994,920.70/107,992,381.05 = 57,646,013.70/x - Step 3: Cross multiply
71,994,920.70x = 107,992,381.05 × 57,646,013.70 - Step 4: Simplify right side
71,994,920.70x = 6,225,330,277,503,921 - Step 5: Solve for x
x = 6,225,330,277,503,921/71,994,920.70 - Step 6: Final answer
x = 86,469,020.55
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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.