Finding the Fourth Proportional to 71,291.43, 106,904.16 and 40,126.68
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Solution
The fourth proportional to 71,291.43, 106,904.16 and 40,126.68 is: 60,171.45
Step by Step Solution
- Step 1: Write the proportion equation
71,291.43 : 106,904.16 = 40,126.68 : x - Step 2: Convert to fraction form
71,291.43/106,904.16 = 40,126.68/x - Step 3: Cross multiply
71,291.43x = 106,904.16 × 40,126.68 - Step 4: Simplify right side
71,291.43x = 4,289,709,018.99 - Step 5: Solve for x
x = 4,289,709,018.99/71,291.43 - Step 6: Final answer
x = 60,171.45
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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.