Finding the Fourth Proportional to 66,689,933.19, 100,020,902.99 and 18,809,679.75
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Solution
The fourth proportional to 66,689,933.19, 100,020,902.99 and 18,809,679.75 is: 28,210,571.87
Step by Step Solution
- Step 1: Write the proportion equation
66,689,933.19 : 100,020,902.99 = 18,809,679.75 : x - Step 2: Convert to fraction form
66,689,933.19/100,020,902.99 = 18,809,679.75/x - Step 3: Cross multiply
66,689,933.19x = 100,020,902.99 × 18,809,679.75 - Step 4: Simplify right side
66,689,933.19x = 1,881,361,153,453,669 - Step 5: Solve for x
x = 1,881,361,153,453,669/66,689,933.19 - Step 6: Final answer
x = 28,210,571.87
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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.