Finding the Fourth Proportional to 84,909.40, 117,169.28 and 46,668.12
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Solution
The fourth proportional to 84,909.40, 117,169.28 and 46,668.12 is: 64,398.88
Step by Step Solution
- Step 1: Write the proportion equation
84,909.40 : 117,169.28 = 46,668.12 : x - Step 2: Convert to fraction form
84,909.40/117,169.28 = 46,668.12/x - Step 3: Cross multiply
84,909.40x = 117,169.28 × 46,668.12 - Step 4: Simplify right side
84,909.40x = 5,468,070,019.35 - Step 5: Solve for x
x = 5,468,070,019.35/84,909.40 - Step 6: Final answer
x = 64,398.88
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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.