Finding the Fourth Proportional to 85,380.84, 128,108.16 and 32,778.09
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Solution
The fourth proportional to 85,380.84, 128,108.16 and 32,778.09 is: 49,181.30
Step by Step Solution
- Step 1: Write the proportion equation
85,380.84 : 128,108.16 = 32,778.09 : x - Step 2: Convert to fraction form
85,380.84/128,108.16 = 32,778.09/x - Step 3: Cross multiply
85,380.84x = 128,108.16 × 32,778.09 - Step 4: Simplify right side
85,380.84x = 4,199,140,798.21 - Step 5: Solve for x
x = 4,199,140,798.21/85,380.84 - Step 6: Final answer
x = 49,181.30
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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.