Finding the Fourth Proportional to 90,424.18, 124,765.17 and 54,119.98
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Solution
The fourth proportional to 90,424.18, 124,765.17 and 54,119.98 is: 74,673.48
Step by Step Solution
- Step 1: Write the proportion equation
90,424.18 : 124,765.17 = 54,119.98 : x - Step 2: Convert to fraction form
90,424.18/124,765.17 = 54,119.98/x - Step 3: Cross multiply
90,424.18x = 124,765.17 × 54,119.98 - Step 4: Simplify right side
90,424.18x = 6,752,288,505.10 - Step 5: Solve for x
x = 6,752,288,505.10/90,424.18 - Step 6: Final answer
x = 74,673.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.