Finding the Fourth Proportional to 81,979,431.37, 113,131,519.43 and 44,809,955.75
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Solution
The fourth proportional to 81,979,431.37, 113,131,519.43 and 44,809,955.75 is: 61,837,686.54
Step by Step Solution
- Step 1: Write the proportion equation
81,979,431.37 : 113,131,519.43 = 44,809,955.75 : x - Step 2: Convert to fraction form
81,979,431.37/113,131,519.43 = 44,809,955.75/x - Step 3: Cross multiply
81,979,431.37x = 113,131,519.43 × 44,809,955.75 - Step 4: Simplify right side
81,979,431.37x = 5,069,418,379,647,344 - Step 5: Solve for x
x = 5,069,418,379,647,344/81,979,431.37 - Step 6: Final answer
x = 61,837,686.54
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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.