Finding the Fourth Proportional to 81,649,808.10, 122,474,712.15 and 55,783,721.70
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Solution
The fourth proportional to 81,649,808.10, 122,474,712.15 and 55,783,721.70 is: 83,675,582.55
Step by Step Solution
- Step 1: Write the proportion equation
81,649,808.10 : 122,474,712.15 = 55,783,721.70 : x - Step 2: Convert to fraction form
81,649,808.10/122,474,712.15 = 55,783,721.70/x - Step 3: Cross multiply
81,649,808.10x = 122,474,712.15 × 55,783,721.70 - Step 4: Simplify right side
81,649,808.10x = 6,832,095,257,863,209 - Step 5: Solve for x
x = 6,832,095,257,863,209/81,649,808.10 - Step 6: Final answer
x = 83,675,582.55
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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.