Finding the Fourth Proportional to 87,930.24, 121,321.44 and 52,117.44
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Solution
The fourth proportional to 87,930.24, 121,321.44 and 52,117.44 is: 71,908.85
Step by Step Solution
- Step 1: Write the proportion equation
87,930.24 : 121,321.44 = 52,117.44 : x - Step 2: Convert to fraction form
87,930.24/121,321.44 = 52,117.44/x - Step 3: Cross multiply
87,930.24x = 121,321.44 × 52,117.44 - Step 4: Simplify right side
87,930.24x = 6,322,962,869.91 - Step 5: Solve for x
x = 6,322,962,869.91/87,930.24 - Step 6: Final answer
x = 71,908.85
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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.