Finding the Fourth Proportional to 38,779,505.09, 53,515,703.97 and 21,376,140.95
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Solution
The fourth proportional to 38,779,505.09, 53,515,703.97 and 21,376,140.95 is: 29,499,067.31
Step by Step Solution
- Step 1: Write the proportion equation
38,779,505.09 : 53,515,703.97 = 21,376,140.95 : x - Step 2: Convert to fraction form
38,779,505.09/53,515,703.97 = 21,376,140.95/x - Step 3: Cross multiply
38,779,505.09x = 53,515,703.97 × 21,376,140.95 - Step 4: Simplify right side
38,779,505.09x = 1,143,959,230,833,616 - Step 5: Solve for x
x = 1,143,959,230,833,616/38,779,505.09 - Step 6: Final answer
x = 29,499,067.31
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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.