Finding the Fourth Proportional to 66,428,913.40, 99,643,370.10 and 40,786,775.80
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Solution
The fourth proportional to 66,428,913.40, 99,643,370.10 and 40,786,775.80 is: 61,180,163.70
Step by Step Solution
- Step 1: Write the proportion equation
66,428,913.40 : 99,643,370.10 = 40,786,775.80 : x - Step 2: Convert to fraction form
66,428,913.40/99,643,370.10 = 40,786,775.80/x - Step 3: Cross multiply
66,428,913.40x = 99,643,370.10 × 40,786,775.80 - Step 4: Simplify right side
66,428,913.40x = 4,064,131,796,225,123 - Step 5: Solve for x
x = 4,064,131,796,225,123/66,428,913.40 - Step 6: Final answer
x = 61,180,163.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.