Finding the Fourth Proportional to 85,826.57, 128,708.19 and 29,652.26
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Solution
The fourth proportional to 85,826.57, 128,708.19 and 29,652.26 is: 44,467.45
Step by Step Solution
- Step 1: Write the proportion equation
85,826.57 : 128,708.19 = 29,652.26 : x - Step 2: Convert to fraction form
85,826.57/128,708.19 = 29,652.26/x - Step 3: Cross multiply
85,826.57x = 128,708.19 × 29,652.26 - Step 4: Simplify right side
85,826.57x = 3,816,488,070.47 - Step 5: Solve for x
x = 3,816,488,070.47/85,826.57 - Step 6: Final answer
x = 44,467.45
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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.