Finding the Fourth Proportional to 99,378,496.80, 137,145,594.72 and 54,729,229.68
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Solution
The fourth proportional to 99,378,496.80, 137,145,594.72 and 54,729,229.68 is: 75,528,137.32
Step by Step Solution
- Step 1: Write the proportion equation
99,378,496.80 : 137,145,594.72 = 54,729,229.68 : x - Step 2: Convert to fraction form
99,378,496.80/137,145,594.72 = 54,729,229.68/x - Step 3: Cross multiply
99,378,496.80x = 137,145,594.72 × 54,729,229.68 - Step 4: Simplify right side
99,378,496.80x = 7,505,872,753,031,075 - Step 5: Solve for x
x = 7,505,872,753,031,075/99,378,496.80 - Step 6: Final answer
x = 75,528,137.32
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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.