Finding the Fourth Proportional to 66,493,117.80, 99,739,676.70 and 57,405,476.70
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Solution
The fourth proportional to 66,493,117.80, 99,739,676.70 and 57,405,476.70 is: 86,108,215.05
Step by Step Solution
- Step 1: Write the proportion equation
66,493,117.80 : 99,739,676.70 = 57,405,476.70 : x - Step 2: Convert to fraction form
66,493,117.80/99,739,676.70 = 57,405,476.70/x - Step 3: Cross multiply
66,493,117.80x = 99,739,676.70 × 57,405,476.70 - Step 4: Simplify right side
66,493,117.80x = 5,725,603,686,867,383 - Step 5: Solve for x
x = 5,725,603,686,867,383/66,493,117.80 - Step 6: Final answer
x = 86,108,215.05
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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.