Finding the Fourth Proportional to 87,755.74, 121,064.46 and 51,438.78
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Solution
The fourth proportional to 87,755.74, 121,064.46 and 51,438.78 is: 70,962.96
Step by Step Solution
- Step 1: Write the proportion equation
87,755.74 : 121,064.46 = 51,438.78 : x - Step 2: Convert to fraction form
87,755.74/121,064.46 = 51,438.78/x - Step 3: Cross multiply
87,755.74x = 121,064.46 × 51,438.78 - Step 4: Simplify right side
87,755.74x = 6,227,407,261.24 - Step 5: Solve for x
x = 6,227,407,261.24/87,755.74 - Step 6: Final answer
x = 70,962.96
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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.