Finding the Fourth Proportional to 85,642.62, 128,431.98 and 29,466.84
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Solution
The fourth proportional to 85,642.62, 128,431.98 and 29,466.84 is: 44,189.27
Step by Step Solution
- Step 1: Write the proportion equation
85,642.62 : 128,431.98 = 29,466.84 : x - Step 2: Convert to fraction form
85,642.62/128,431.98 = 29,466.84/x - Step 3: Cross multiply
85,642.62x = 128,431.98 × 29,466.84 - Step 4: Simplify right side
85,642.62x = 3,784,484,605.54 - Step 5: Solve for x
x = 3,784,484,605.54/85,642.62 - Step 6: Final answer
x = 44,189.27
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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.