Finding the Fourth Proportional to 66,979,247.18, 92,404,982.67 and 38,702,936.12
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Solution
The fourth proportional to 66,979,247.18, 92,404,982.67 and 38,702,936.12 is: 53,394,809.47
Step by Step Solution
- Step 1: Write the proportion equation
66,979,247.18 : 92,404,982.67 = 38,702,936.12 : x - Step 2: Convert to fraction form
66,979,247.18/92,404,982.67 = 38,702,936.12/x - Step 3: Cross multiply
66,979,247.18x = 92,404,982.67 × 38,702,936.12 - Step 4: Simplify right side
66,979,247.18x = 3,576,344,141,446,717 - Step 5: Solve for x
x = 3,576,344,141,446,717/66,979,247.18 - Step 6: Final answer
x = 53,394,809.47
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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.