Finding the Fourth Proportional to 90,298.10, 135,420.99 and 27,115.67
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Solution
The fourth proportional to 90,298.10, 135,420.99 and 27,115.67 is: 40,665.64
Step by Step Solution
- Step 1: Write the proportion equation
90,298.10 : 135,420.99 = 27,115.67 : x - Step 2: Convert to fraction form
90,298.10/135,420.99 = 27,115.67/x - Step 3: Cross multiply
90,298.10x = 135,420.99 × 27,115.67 - Step 4: Simplify right side
90,298.10x = 3,672,030,198.81 - Step 5: Solve for x
x = 3,672,030,198.81/90,298.10 - Step 6: Final answer
x = 40,665.64
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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.