Finding the Fourth Proportional to 87,777.36, 121,132.60 and 47,490.96
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Solution
The fourth proportional to 87,777.36, 121,132.60 and 47,490.96 is: 65,537.44
Step by Step Solution
- Step 1: Write the proportion equation
87,777.36 : 121,132.60 = 47,490.96 : x - Step 2: Convert to fraction form
87,777.36/121,132.60 = 47,490.96/x - Step 3: Cross multiply
87,777.36x = 121,132.60 × 47,490.96 - Step 4: Simplify right side
87,777.36x = 5,752,703,461.30 - Step 5: Solve for x
x = 5,752,703,461.30/87,777.36 - Step 6: Final answer
x = 65,537.44
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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.