Finding the Fourth Proportional to 83,621.14, 115,393.14 and 47,815.08
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Solution
The fourth proportional to 83,621.14, 115,393.14 and 47,815.08 is: 65,982.50
Step by Step Solution
- Step 1: Write the proportion equation
83,621.14 : 115,393.14 = 47,815.08 : x - Step 2: Convert to fraction form
83,621.14/115,393.14 = 47,815.08/x - Step 3: Cross multiply
83,621.14x = 115,393.14 × 47,815.08 - Step 4: Simplify right side
83,621.14x = 5,517,532,220.55 - Step 5: Solve for x
x = 5,517,532,220.55/83,621.14 - Step 6: Final answer
x = 65,982.50
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1.5x scale
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.