Finding the Fourth Proportional to 86,725.74, 129,842.62 and 56,774.90
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Solution
The fourth proportional to 86,725.74, 129,842.62 and 56,774.90 is: 85,001.31
Step by Step Solution
- Step 1: Write the proportion equation
86,725.74 : 129,842.62 = 56,774.90 : x - Step 2: Convert to fraction form
86,725.74/129,842.62 = 56,774.90/x - Step 3: Cross multiply
86,725.74x = 129,842.62 × 56,774.90 - Step 4: Simplify right side
86,725.74x = 7,371,801,766.24 - Step 5: Solve for x
x = 7,371,801,766.24/86,725.74 - Step 6: Final answer
x = 85,001.31
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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.