Finding the Fourth Proportional to 87,763.13, 121,112.75 and 47,476.79
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Solution
The fourth proportional to 87,763.13, 121,112.75 and 47,476.79 is: 65,517.77
Step by Step Solution
- Step 1: Write the proportion equation
87,763.13 : 121,112.75 = 47,476.79 : x - Step 2: Convert to fraction form
87,763.13/121,112.75 = 47,476.79/x - Step 3: Cross multiply
87,763.13x = 121,112.75 × 47,476.79 - Step 4: Simplify right side
87,763.13x = 5,750,044,598.07 - Step 5: Solve for x
x = 5,750,044,598.07/87,763.13 - Step 6: Final answer
x = 65,517.77
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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.