Finding the Fourth Proportional to 77,009.60, 115,418.99 and 43,628.49
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Solution
The fourth proportional to 77,009.60, 115,418.99 and 43,628.49 is: 65,388.68
Step by Step Solution
- Step 1: Write the proportion equation
77,009.60 : 115,418.99 = 43,628.49 : x - Step 2: Convert to fraction form
77,009.60/115,418.99 = 43,628.49/x - Step 3: Cross multiply
77,009.60x = 115,418.99 × 43,628.49 - Step 4: Simplify right side
77,009.60x = 5,035,556,360.10 - Step 5: Solve for x
x = 5,035,556,360.10/77,009.60 - Step 6: Final answer
x = 65,388.68
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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.