Finding the Fourth Proportional to 99,491,788.12, 137,297,271.97 and 55,440,643.63
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Solution
The fourth proportional to 99,491,788.12, 137,297,271.97 and 55,440,643.63 is: 76,507,310.51
Step by Step Solution
- Step 1: Write the proportion equation
99,491,788.12 : 137,297,271.97 = 55,440,643.63 : x - Step 2: Convert to fraction form
99,491,788.12/137,297,271.97 = 55,440,643.63/x - Step 3: Cross multiply
99,491,788.12x = 137,297,271.97 × 55,440,643.63 - Step 4: Simplify right side
99,491,788.12x = 7,611,849,126,659,958 - Step 5: Solve for x
x = 7,611,849,126,659,958/99,491,788.12 - Step 6: Final answer
x = 76,507,310.51
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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.