Finding the Fourth Proportional to 99,785.49, 149,598.75 and 57,617.70
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Solution
The fourth proportional to 99,785.49, 149,598.75 and 57,617.70 is: 86,380.65
Step by Step Solution
- Step 1: Write the proportion equation
99,785.49 : 149,598.75 = 57,617.70 : x - Step 2: Convert to fraction form
99,785.49/149,598.75 = 57,617.70/x - Step 3: Cross multiply
99,785.49x = 149,598.75 × 57,617.70 - Step 4: Simplify right side
99,785.49x = 8,619,535,897.88 - Step 5: Solve for x
x = 8,619,535,897.88/99,785.49 - Step 6: Final answer
x = 86,380.65
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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.