Finding the Fourth Proportional to 83,121.64, 114,707.99 and 47,311.65
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Solution
The fourth proportional to 83,121.64, 114,707.99 and 47,311.65 is: 65,290.15
Step by Step Solution
- Step 1: Write the proportion equation
83,121.64 : 114,707.99 = 47,311.65 : x - Step 2: Convert to fraction form
83,121.64/114,707.99 = 47,311.65/x - Step 3: Cross multiply
83,121.64x = 114,707.99 × 47,311.65 - Step 4: Simplify right side
83,121.64x = 5,427,024,275.08 - Step 5: Solve for x
x = 5,427,024,275.08/83,121.64 - Step 6: Final answer
x = 65,290.15
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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.