Finding the Fourth Proportional to 77,645.91, 107,218.58 and 73,660.08
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Solution
The fourth proportional to 77,645.91, 107,218.58 and 73,660.08 is: 101,714.68
Step by Step Solution
- Step 1: Write the proportion equation
77,645.91 : 107,218.58 = 73,660.08 : x - Step 2: Convert to fraction form
77,645.91/107,218.58 = 73,660.08/x - Step 3: Cross multiply
77,645.91x = 107,218.58 × 73,660.08 - Step 4: Simplify right side
77,645.91x = 7,897,729,180.29 - Step 5: Solve for x
x = 7,897,729,180.29/77,645.91 - Step 6: Final answer
x = 101,714.68
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1.5x scale
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.