Finding the Fourth Proportional to 85,775.36, 128,631.44 and 29,601.14
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Solution
The fourth proportional to 85,775.36, 128,631.44 and 29,601.14 is: 44,390.80
Step by Step Solution
- Step 1: Write the proportion equation
85,775.36 : 128,631.44 = 29,601.14 : x - Step 2: Convert to fraction form
85,775.36/128,631.44 = 29,601.14/x - Step 3: Cross multiply
85,775.36x = 128,631.44 × 29,601.14 - Step 4: Simplify right side
85,775.36x = 3,807,636,694.69 - Step 5: Solve for x
x = 3,807,636,694.69/85,775.36 - Step 6: Final answer
x = 44,390.80
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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.