Finding the Fourth Proportional to 89,939.09, 124,132.20 and 53,642.87
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Solution
The fourth proportional to 89,939.09, 124,132.20 and 53,642.87 is: 74,036.85
Step by Step Solution
- Step 1: Write the proportion equation
89,939.09 : 124,132.20 = 53,642.87 : x - Step 2: Convert to fraction form
89,939.09/124,132.20 = 53,642.87/x - Step 3: Cross multiply
89,939.09x = 124,132.20 × 53,642.87 - Step 4: Simplify right side
89,939.09x = 6,658,806,578.54 - Step 5: Solve for x
x = 6,658,806,578.54/89,939.09 - Step 6: Final answer
x = 74,036.85
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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.