Finding the Fourth Proportional to 81,979,438.12, 113,131,528.74 and 44,809,962.50
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Solution
The fourth proportional to 81,979,438.12, 113,131,528.74 and 44,809,962.50 is: 61,837,695.86
Step by Step Solution
- Step 1: Write the proportion equation
81,979,438.12 : 113,131,528.74 = 44,809,962.50 : x - Step 2: Convert to fraction form
81,979,438.12/113,131,528.74 = 44,809,962.50/x - Step 3: Cross multiply
81,979,438.12x = 113,131,528.74 × 44,809,962.50 - Step 4: Simplify right side
81,979,438.12x = 5,069,419,560,689,901 - Step 5: Solve for x
x = 5,069,419,560,689,901/81,979,438.12 - Step 6: Final answer
x = 61,837,695.86
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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.