Finding the Fourth Proportional to 83,721.81, 115,536.97 and 45,482.12
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Solution
The fourth proportional to 83,721.81, 115,536.97 and 45,482.12 is: 62,765.80
Step by Step Solution
- Step 1: Write the proportion equation
83,721.81 : 115,536.97 = 45,482.12 : x - Step 2: Convert to fraction form
83,721.81/115,536.97 = 45,482.12/x - Step 3: Cross multiply
83,721.81x = 115,536.97 × 45,482.12 - Step 4: Simplify right side
83,721.81x = 5,254,866,333.98 - Step 5: Solve for x
x = 5,254,866,333.98/83,721.81 - Step 6: Final answer
x = 62,765.80
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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.