Finding the Fourth Proportional to 71,073.24, 106,631.16 and 21,155.08
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Solution
The fourth proportional to 71,073.24, 106,631.16 and 21,155.08 is: 31,738.96
Step by Step Solution
- Step 1: Write the proportion equation
71,073.24 : 106,631.16 = 21,155.08 : x - Step 2: Convert to fraction form
71,073.24/106,631.16 = 21,155.08/x - Step 3: Cross multiply
71,073.24x = 106,631.16 × 21,155.08 - Step 4: Simplify right side
71,073.24x = 2,255,790,720.29 - Step 5: Solve for x
x = 2,255,790,720.29/71,073.24 - Step 6: Final answer
x = 31,738.96
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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.