Finding the Fourth Proportional to 86,869.68, 119,806.16 and 66,775.20
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Solution
The fourth proportional to 86,869.68, 119,806.16 and 66,775.20 is: 92,092.89
Step by Step Solution
- Step 1: Write the proportion equation
86,869.68 : 119,806.16 = 66,775.20 : x - Step 2: Convert to fraction form
86,869.68/119,806.16 = 66,775.20/x - Step 3: Cross multiply
86,869.68x = 119,806.16 × 66,775.20 - Step 4: Simplify right side
86,869.68x = 8,000,080,295.23 - Step 5: Solve for x
x = 8,000,080,295.23/86,869.68 - Step 6: Final answer
x = 92,092.89
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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.