Finding the Fourth Proportional to 85,464.68, 128,209.17 and 26,305.28
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Solution
The fourth proportional to 85,464.68, 128,209.17 and 26,305.28 is: 39,461.66
Step by Step Solution
- Step 1: Write the proportion equation
85,464.68 : 128,209.17 = 26,305.28 : x - Step 2: Convert to fraction form
85,464.68/128,209.17 = 26,305.28/x - Step 3: Cross multiply
85,464.68x = 128,209.17 × 26,305.28 - Step 4: Simplify right side
85,464.68x = 3,372,578,115.42 - Step 5: Solve for x
x = 3,372,578,115.42/85,464.68 - Step 6: Final answer
x = 39,461.66
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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.