Finding the Fourth Proportional to 71,579.15, 107,368.61 and 18,271.12
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Solution
The fourth proportional to 71,579.15, 107,368.61 and 18,271.12 is: 27,406.65
Step by Step Solution
- Step 1: Write the proportion equation
71,579.15 : 107,368.61 = 18,271.12 : x - Step 2: Convert to fraction form
71,579.15/107,368.61 = 18,271.12/x - Step 3: Cross multiply
71,579.15x = 107,368.61 × 18,271.12 - Step 4: Simplify right side
71,579.15x = 1,961,745,003.83 - Step 5: Solve for x
x = 1,961,745,003.83/71,579.15 - Step 6: Final answer
x = 27,406.65
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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.