Finding the Fourth Proportional to 85,638.87, 128,426.36 and 29,463.09
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Solution
The fourth proportional to 85,638.87, 128,426.36 and 29,463.09 is: 44,183.64
Step by Step Solution
- Step 1: Write the proportion equation
85,638.87 : 128,426.36 = 29,463.09 : x - Step 2: Convert to fraction form
85,638.87/128,426.36 = 29,463.09/x - Step 3: Cross multiply
85,638.87x = 128,426.36 × 29,463.09 - Step 4: Simplify right side
85,638.87x = 3,783,837,255.74 - Step 5: Solve for x
x = 3,783,837,255.74/85,638.87 - Step 6: Final answer
x = 44,183.64
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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.