Finding the Fourth Proportional to 85,579.08, 128,380.92 and 26,419.82
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Solution
The fourth proportional to 85,579.08, 128,380.92 and 26,419.82 is: 39,633.52
Step by Step Solution
- Step 1: Write the proportion equation
85,579.08 : 128,380.92 = 26,419.82 : x - Step 2: Convert to fraction form
85,579.08/128,380.92 = 26,419.82/x - Step 3: Cross multiply
85,579.08x = 128,380.92 × 26,419.82 - Step 4: Simplify right side
85,579.08x = 3,391,800,155.93 - Step 5: Solve for x
x = 3,391,800,155.93/85,579.08 - Step 6: Final answer
x = 39,633.52
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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.