Finding the Fourth Proportional to 86,646.26, 129,981.80 and 26,679.82
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Solution
The fourth proportional to 86,646.26, 129,981.80 and 26,679.82 is: 40,023.55
Step by Step Solution
- Step 1: Write the proportion equation
86,646.26 : 129,981.80 = 26,679.82 : x - Step 2: Convert to fraction form
86,646.26/129,981.80 = 26,679.82/x - Step 3: Cross multiply
86,646.26x = 129,981.80 × 26,679.82 - Step 4: Simplify right side
86,646.26x = 3,467,891,027.28 - Step 5: Solve for x
x = 3,467,891,027.28/86,646.26 - Step 6: Final answer
x = 40,023.55
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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.