Finding the Fourth Proportional to 38,992,814.12, 53,811,765.12 and 21,589,159.58
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Solution
The fourth proportional to 38,992,814.12, 53,811,765.12 and 21,589,159.58 is: 29,793,971.29
Step by Step Solution
- Step 1: Write the proportion equation
38,992,814.12 : 53,811,765.12 = 21,589,159.58 : x - Step 2: Convert to fraction form
38,992,814.12/53,811,765.12 = 21,589,159.58/x - Step 3: Cross multiply
38,992,814.12x = 53,811,765.12 × 21,589,159.58 - Step 4: Simplify right side
38,992,814.12x = 1,161,750,784,188,099 - Step 5: Solve for x
x = 1,161,750,784,188,099/38,992,814.12 - Step 6: Final answer
x = 29,793,971.29
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.