Finding the Fourth Proportional to 84,612.20, 126,918.30 and 34,675.70
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Solution
The fourth proportional to 84,612.20, 126,918.30 and 34,675.70 is: 52,013.55
Step by Step Solution
- Step 1: Write the proportion equation
84,612.20 : 126,918.30 = 34,675.70 : x - Step 2: Convert to fraction form
84,612.20/126,918.30 = 34,675.70/x - Step 3: Cross multiply
84,612.20x = 126,918.30 × 34,675.70 - Step 4: Simplify right side
84,612.20x = 4,400,980,895.31 - Step 5: Solve for x
x = 4,400,980,895.31/84,612.20 - Step 6: Final answer
x = 52,013.55
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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.