Finding the Fourth Proportional to 85,683.36, 128,547.21 and 50,174.68
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Solution
The fourth proportional to 85,683.36, 128,547.21 and 50,174.68 is: 75,275.00
Step by Step Solution
- Step 1: Write the proportion equation
85,683.36 : 128,547.21 = 50,174.68 : x - Step 2: Convert to fraction form
85,683.36/128,547.21 = 50,174.68/x - Step 3: Cross multiply
85,683.36x = 128,547.21 × 50,174.68 - Step 4: Simplify right side
85,683.36x = 6,449,814,233.03 - Step 5: Solve for x
x = 6,449,814,233.03/85,683.36 - Step 6: Final answer
x = 75,275.00
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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.