Finding the Fourth Proportional to 86,145.42, 129,207.86 and 22,970.28
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Solution
The fourth proportional to 86,145.42, 129,207.86 and 22,970.28 is: 34,452.68
Step by Step Solution
- Step 1: Write the proportion equation
86,145.42 : 129,207.86 = 22,970.28 : x - Step 2: Convert to fraction form
86,145.42/129,207.86 = 22,970.28/x - Step 3: Cross multiply
86,145.42x = 129,207.86 × 22,970.28 - Step 4: Simplify right side
86,145.42x = 2,967,940,722.40 - Step 5: Solve for x
x = 2,967,940,722.40/86,145.42 - Step 6: Final answer
x = 34,452.68
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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.