Finding the Fourth Proportional to 66,689,936.19, 100,020,907.49 and 18,809,682.75
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Solution
The fourth proportional to 66,689,936.19, 100,020,907.49 and 18,809,682.75 is: 28,210,576.37
Step by Step Solution
- Step 1: Write the proportion equation
66,689,936.19 : 100,020,907.49 = 18,809,682.75 : x - Step 2: Convert to fraction form
66,689,936.19/100,020,907.49 = 18,809,682.75/x - Step 3: Cross multiply
66,689,936.19x = 100,020,907.49 × 18,809,682.75 - Step 4: Simplify right side
66,689,936.19x = 1,881,361,538,159,950.25 - Step 5: Solve for x
x = 1,881,361,538,159,950.25/66,689,936.19 - Step 6: Final answer
x = 28,210,576.37
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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.