Finding the Fourth Proportional to 87,708.51, 121,036.14 and 53,711.60
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Solution
The fourth proportional to 87,708.51, 121,036.14 and 53,711.60 is: 74,121.02
Step by Step Solution
- Step 1: Write the proportion equation
87,708.51 : 121,036.14 = 53,711.60 : x - Step 2: Convert to fraction form
87,708.51/121,036.14 = 53,711.60/x - Step 3: Cross multiply
87,708.51x = 121,036.14 × 53,711.60 - Step 4: Simplify right side
87,708.51x = 6,501,044,132.04 - Step 5: Solve for x
x = 6,501,044,132.04/87,708.51 - Step 6: Final answer
x = 74,121.02
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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.