Finding the Fourth Proportional to 75,614,475.20, 113,421,712.80 and 71,633,163.20
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Solution
The fourth proportional to 75,614,475.20, 113,421,712.80 and 71,633,163.20 is: 107,449,744.80
Step by Step Solution
- Step 1: Write the proportion equation
75,614,475.20 : 113,421,712.80 = 71,633,163.20 : x - Step 2: Convert to fraction form
75,614,475.20/113,421,712.80 = 71,633,163.20/x - Step 3: Cross multiply
75,614,475.20x = 113,421,712.80 × 71,633,163.20 - Step 4: Simplify right side
75,614,475.20x = 8,124,756,063,425,929 - Step 5: Solve for x
x = 8,124,756,063,425,929/75,614,475.20 - Step 6: Final answer
x = 107,449,744.80
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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.