Finding the Fourth Proportional to 38,779,505.56, 53,515,704.62 and 21,376,141.41
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Solution
The fourth proportional to 38,779,505.56, 53,515,704.62 and 21,376,141.41 is: 29,499,067.95
Step by Step Solution
- Step 1: Write the proportion equation
38,779,505.56 : 53,515,704.62 = 21,376,141.41 : x - Step 2: Convert to fraction form
38,779,505.56/53,515,704.62 = 21,376,141.41/x - Step 3: Cross multiply
38,779,505.56x = 53,515,704.62 × 21,376,141.41 - Step 4: Simplify right side
38,779,505.56x = 1,143,959,269,612,910.25 - Step 5: Solve for x
x = 1,143,959,269,612,910.25/38,779,505.56 - Step 6: Final answer
x = 29,499,067.95
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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.