Finding the Fourth Proportional to 87,860.64, 121,247.73 and 47,574.42
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Solution
The fourth proportional to 87,860.64, 121,247.73 and 47,574.42 is: 65,652.72
Step by Step Solution
- Step 1: Write the proportion equation
87,860.64 : 121,247.73 = 47,574.42 : x - Step 2: Convert to fraction form
87,860.64/121,247.73 = 47,574.42/x - Step 3: Cross multiply
87,860.64x = 121,247.73 × 47,574.42 - Step 4: Simplify right side
87,860.64x = 5,768,290,431.07 - Step 5: Solve for x
x = 5,768,290,431.07/87,860.64 - Step 6: Final answer
x = 65,652.72
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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.