Finding the Fourth Proportional to 81,678,009.70, 122,367,715.35 and 66,449,491.30
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Solution
The fourth proportional to 81,678,009.70, 122,367,715.35 and 66,449,491.30 is: 99,552,773.95
Step by Step Solution
- Step 1: Write the proportion equation
81,678,009.70 : 122,367,715.35 = 66,449,491.30 : x - Step 2: Convert to fraction form
81,678,009.70/122,367,715.35 = 66,449,491.30/x - Step 3: Cross multiply
81,678,009.70x = 122,367,715.35 × 66,449,491.30 - Step 4: Simplify right side
81,678,009.70x = 8,131,272,436,550,701 - Step 5: Solve for x
x = 8,131,272,436,550,701/81,678,009.70 - Step 6: Final answer
x = 99,552,773.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.