Finding the Fourth Proportional to 54,128,281.80, 81,192,422.70 and 13,738,765.80
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Solution
The fourth proportional to 54,128,281.80, 81,192,422.70 and 13,738,765.80 is: 20,608,148.70
Step by Step Solution
- Step 1: Write the proportion equation
54,128,281.80 : 81,192,422.70 = 13,738,765.80 : x - Step 2: Convert to fraction form
54,128,281.80/81,192,422.70 = 13,738,765.80/x - Step 3: Cross multiply
54,128,281.80x = 81,192,422.70 × 13,738,765.80 - Step 4: Simplify right side
54,128,281.80x = 1,115,483,680,209,903.75 - Step 5: Solve for x
x = 1,115,483,680,209,903.75/54,128,281.80 - Step 6: Final answer
x = 20,608,148.70
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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.