Finding the Fourth Proportional to 85,857.36, 128,785.36 and 26,692.92
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Solution
The fourth proportional to 85,857.36, 128,785.36 and 26,692.92 is: 40,039.17
Step by Step Solution
- Step 1: Write the proportion equation
85,857.36 : 128,785.36 = 26,692.92 : x - Step 2: Convert to fraction form
85,857.36/128,785.36 = 26,692.92/x - Step 3: Cross multiply
85,857.36x = 128,785.36 × 26,692.92 - Step 4: Simplify right side
85,857.36x = 3,437,657,311.65 - Step 5: Solve for x
x = 3,437,657,311.65/85,857.36 - Step 6: Final answer
x = 40,039.17
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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.