Finding the Fourth Proportional to 31,383,788.99, 47,075,617.87 and 8,664,620.63
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Solution
The fourth proportional to 31,383,788.99, 47,075,617.87 and 8,664,620.63 is: 12,996,912.82
Step by Step Solution
- Step 1: Write the proportion equation
31,383,788.99 : 47,075,617.87 = 8,664,620.63 : x - Step 2: Convert to fraction form
31,383,788.99/47,075,617.87 = 8,664,620.63/x - Step 3: Cross multiply
31,383,788.99x = 47,075,617.87 × 8,664,620.63 - Step 4: Simplify right side
31,383,788.99x = 407,892,369,509,359 - Step 5: Solve for x
x = 407,892,369,509,359/31,383,788.99 - Step 6: Final answer
x = 12,996,912.82
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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.