Finding the Fourth Proportional to 66,145,376.13, 91,243,390.37 and 39,676,687.25
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Solution
The fourth proportional to 66,145,376.13, 91,243,390.37 and 39,676,687.25 is: 54,731,497.11
Step by Step Solution
- Step 1: Write the proportion equation
66,145,376.13 : 91,243,390.37 = 39,676,687.25 : x - Step 2: Convert to fraction form
66,145,376.13/91,243,390.37 = 39,676,687.25/x - Step 3: Cross multiply
66,145,376.13x = 91,243,390.37 × 39,676,687.25 - Step 4: Simplify right side
66,145,376.13x = 3,620,235,462,685,551 - Step 5: Solve for x
x = 3,620,235,462,685,551/66,145,376.13 - Step 6: Final answer
x = 54,731,497.11
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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.