Finding the Fourth Proportional to 75,668.19, 104,420.57 and 47,389.47
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Solution
The fourth proportional to 75,668.19, 104,420.57 and 47,389.47 is: 65,396.51
Step by Step Solution
- Step 1: Write the proportion equation
75,668.19 : 104,420.57 = 47,389.47 : x - Step 2: Convert to fraction form
75,668.19/104,420.57 = 47,389.47/x - Step 3: Cross multiply
75,668.19x = 104,420.57 × 47,389.47 - Step 4: Simplify right side
75,668.19x = 4,948,435,469.40 - Step 5: Solve for x
x = 4,948,435,469.40/75,668.19 - Step 6: Final answer
x = 65,396.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.