Finding the Fourth Proportional to 77,110.49, 115,668.02 and 20,950.31
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Solution
The fourth proportional to 77,110.49, 115,668.02 and 20,950.31 is: 31,426.09
Step by Step Solution
- Step 1: Write the proportion equation
77,110.49 : 115,668.02 = 20,950.31 : x - Step 2: Convert to fraction form
77,110.49/115,668.02 = 20,950.31/x - Step 3: Cross multiply
77,110.49x = 115,668.02 × 20,950.31 - Step 4: Simplify right side
77,110.49x = 2,423,281,217.63 - Step 5: Solve for x
x = 2,423,281,217.63/77,110.49 - Step 6: Final answer
x = 31,426.09
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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.