Finding the Fourth Proportional to 87,860.20, 121,247.14 and 47,574.28
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Solution
The fourth proportional to 87,860.20, 121,247.14 and 47,574.28 is: 65,652.54
Step by Step Solution
- Step 1: Write the proportion equation
87,860.20 : 121,247.14 = 47,574.28 : x - Step 2: Convert to fraction form
87,860.20/121,247.14 = 47,574.28/x - Step 3: Cross multiply
87,860.20x = 121,247.14 × 47,574.28 - Step 4: Simplify right side
87,860.20x = 5,768,245,387.56 - Step 5: Solve for x
x = 5,768,245,387.56/87,860.20 - Step 6: Final answer
x = 65,652.54
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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.