Finding the Fourth Proportional to 85,397.62, 128,174.55 and 43,306.75
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Solution
The fourth proportional to 85,397.62, 128,174.55 and 43,306.75 is: 64,999.75
Step by Step Solution
- Step 1: Write the proportion equation
85,397.62 : 128,174.55 = 43,306.75 : x - Step 2: Convert to fraction form
85,397.62/128,174.55 = 43,306.75/x - Step 3: Cross multiply
85,397.62x = 128,174.55 × 43,306.75 - Step 4: Simplify right side
85,397.62x = 5,550,823,434.63 - Step 5: Solve for x
x = 5,550,823,434.63/85,397.62 - Step 6: Final answer
x = 64,999.75
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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.