Finding the Fourth Proportional to 83,290.91, 124,991.67 and 38,921.09
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Solution
The fourth proportional to 83,290.91, 124,991.67 and 38,921.09 is: 58,407.47
Step by Step Solution
- Step 1: Write the proportion equation
83,290.91 : 124,991.67 = 38,921.09 : x - Step 2: Convert to fraction form
83,290.91/124,991.67 = 38,921.09/x - Step 3: Cross multiply
83,290.91x = 124,991.67 × 38,921.09 - Step 4: Simplify right side
83,290.91x = 4,864,811,412.36 - Step 5: Solve for x
x = 4,864,811,412.36/83,290.91 - Step 6: Final answer
x = 58,407.47
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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.