Finding the Fourth Proportional to 85,757,662.30, 128,299,760.18 and 66,178,969.84
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Solution
The fourth proportional to 85,757,662.30, 128,299,760.18 and 66,178,969.84 is: 99,008,598.55
Step by Step Solution
- Step 1: Write the proportion equation
85,757,662.30 : 128,299,760.18 = 66,178,969.84 : x - Step 2: Convert to fraction form
85,757,662.30/128,299,760.18 = 66,178,969.84/x - Step 3: Cross multiply
85,757,662.30x = 128,299,760.18 × 66,178,969.84 - Step 4: Simplify right side
85,757,662.30x = 8,490,745,959,431,454 - Step 5: Solve for x
x = 8,490,745,959,431,454/85,757,662.30 - Step 6: Final answer
x = 99,008,598.55
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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.