Finding the Fourth Proportional to 77,515.38, 116,257.68 and 21,340.94
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Solution
The fourth proportional to 77,515.38, 116,257.68 and 21,340.94 is: 32,007.17
Step by Step Solution
- Step 1: Write the proportion equation
77,515.38 : 116,257.68 = 21,340.94 : x - Step 2: Convert to fraction form
77,515.38/116,257.68 = 21,340.94/x - Step 3: Cross multiply
77,515.38x = 116,257.68 × 21,340.94 - Step 4: Simplify right side
77,515.38x = 2,481,047,592.13 - Step 5: Solve for x
x = 2,481,047,592.13/77,515.38 - Step 6: Final answer
x = 32,007.17
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.