Finding the Fourth Proportional to 90,669.88, 125,135.94 and 54,860.19
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Solution
The fourth proportional to 90,669.88, 125,135.94 and 54,860.19 is: 75,714.02
Step by Step Solution
- Step 1: Write the proportion equation
90,669.88 : 125,135.94 = 54,860.19 : x - Step 2: Convert to fraction form
90,669.88/125,135.94 = 54,860.19/x - Step 3: Cross multiply
90,669.88x = 125,135.94 × 54,860.19 - Step 4: Simplify right side
90,669.88x = 6,864,981,026.40 - Step 5: Solve for x
x = 6,864,981,026.40/90,669.88 - Step 6: Final answer
x = 75,714.02
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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.