Finding the Fourth Proportional to 96,831.13, 133,630.41 and 54,388.75
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Solution
The fourth proportional to 96,831.13, 133,630.41 and 54,388.75 is: 75,058.41
Step by Step Solution
- Step 1: Write the proportion equation
96,831.13 : 133,630.41 = 54,388.75 : x - Step 2: Convert to fraction form
96,831.13/133,630.41 = 54,388.75/x - Step 3: Cross multiply
96,831.13x = 133,630.41 × 54,388.75 - Step 4: Simplify right side
96,831.13x = 7,267,990,961.89 - Step 5: Solve for x
x = 7,267,990,961.89/96,831.13 - Step 6: Final answer
x = 75,058.41
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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.