Finding the Fourth Proportional to 83,930.64, 115,839.82 and 48,120.90
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Solution
The fourth proportional to 83,930.64, 115,839.82 and 48,120.90 is: 66,415.75
Step by Step Solution
- Step 1: Write the proportion equation
83,930.64 : 115,839.82 = 48,120.90 : x - Step 2: Convert to fraction form
83,930.64/115,839.82 = 48,120.90/x - Step 3: Cross multiply
83,930.64x = 115,839.82 × 48,120.90 - Step 4: Simplify right side
83,930.64x = 5,574,316,394.24 - Step 5: Solve for x
x = 5,574,316,394.24/83,930.64 - Step 6: Final answer
x = 66,415.75
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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.