Finding the Fourth Proportional to 87,090.48, 129,912.57 and 84,175.08
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Solution
The fourth proportional to 87,090.48, 129,912.57 and 84,175.08 is: 125,563.68
Step by Step Solution
- Step 1: Write the proportion equation
87,090.48 : 129,912.57 = 84,175.08 : x - Step 2: Convert to fraction form
87,090.48/129,912.57 = 84,175.08/x - Step 3: Cross multiply
87,090.48x = 129,912.57 × 84,175.08 - Step 4: Simplify right side
87,090.48x = 10,935,400,972.76 - Step 5: Solve for x
x = 10,935,400,972.76/87,090.48 - Step 6: Final answer
x = 125,563.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.