Finding the Fourth Proportional to 85,929.74, 128,892.66 and 50,615.08
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Solution
The fourth proportional to 85,929.74, 128,892.66 and 50,615.08 is: 75,921.47
Step by Step Solution
- Step 1: Write the proportion equation
85,929.74 : 128,892.66 = 50,615.08 : x - Step 2: Convert to fraction form
85,929.74/128,892.66 = 50,615.08/x - Step 3: Cross multiply
85,929.74x = 128,892.66 × 50,615.08 - Step 4: Simplify right side
85,929.74x = 6,523,912,297.31 - Step 5: Solve for x
x = 6,523,912,297.31/85,929.74 - Step 6: Final answer
x = 75,921.47
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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.