Finding the Fourth Proportional to 83,815.10, 125,722.65 and 74,629.70
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Solution
The fourth proportional to 83,815.10, 125,722.65 and 74,629.70 is: 111,944.55
Step by Step Solution
- Step 1: Write the proportion equation
83,815.10 : 125,722.65 = 74,629.70 : x - Step 2: Convert to fraction form
83,815.10/125,722.65 = 74,629.70/x - Step 3: Cross multiply
83,815.10x = 125,722.65 × 74,629.70 - Step 4: Simplify right side
83,815.10x = 9,382,643,652.71 - Step 5: Solve for x
x = 9,382,643,652.71/83,815.10 - Step 6: Final answer
x = 111,944.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.