Finding the Fourth Proportional to 68,811.85, 103,217.93 and 18,892.63
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Solution
The fourth proportional to 68,811.85, 103,217.93 and 18,892.63 is: 28,338.99
Step by Step Solution
- Step 1: Write the proportion equation
68,811.85 : 103,217.93 = 18,892.63 : x - Step 2: Convert to fraction form
68,811.85/103,217.93 = 18,892.63/x - Step 3: Cross multiply
68,811.85x = 103,217.93 × 18,892.63 - Step 4: Simplify right side
68,811.85x = 1,950,057,950.04 - Step 5: Solve for x
x = 1,950,057,950.04/68,811.85 - Step 6: Final answer
x = 28,338.99
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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.