Finding the Fourth Proportional to 66,421,969.20, 99,646,950.60 and 28,063,738.80
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Solution
The fourth proportional to 66,421,969.20, 99,646,950.60 and 28,063,738.80 is: 42,101,521.94
Step by Step Solution
- Step 1: Write the proportion equation
66,421,969.20 : 99,646,950.60 = 28,063,738.80 : x - Step 2: Convert to fraction form
66,421,969.20/99,646,950.60 = 28,063,738.80/x - Step 3: Cross multiply
66,421,969.20x = 99,646,950.60 × 28,063,738.80 - Step 4: Simplify right side
66,421,969.20x = 2,796,465,993,854,903 - Step 5: Solve for x
x = 2,796,465,993,854,903/66,421,969.20 - Step 6: Final answer
x = 42,101,521.94
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.