Finding the Fourth Proportional to 86,708.10, 130,060.32 and 39,960.99
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Solution
The fourth proportional to 86,708.10, 130,060.32 and 39,960.99 is: 59,940.64
Step by Step Solution
- Step 1: Write the proportion equation
86,708.10 : 130,060.32 = 39,960.99 : x - Step 2: Convert to fraction form
86,708.10/130,060.32 = 39,960.99/x - Step 3: Cross multiply
86,708.10x = 130,060.32 × 39,960.99 - Step 4: Simplify right side
86,708.10x = 5,197,339,146.92 - Step 5: Solve for x
x = 5,197,339,146.92/86,708.10 - Step 6: Final answer
x = 59,940.64
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.