Finding the Fourth Proportional to 86,749,642.80, 129,872,521.80 and 84,230,218.80
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Solution
The fourth proportional to 86,749,642.80, 129,872,521.80 and 84,230,218.80 is: 126,100,702.83
Step by Step Solution
- Step 1: Write the proportion equation
86,749,642.80 : 129,872,521.80 = 84,230,218.80 : x - Step 2: Convert to fraction form
86,749,642.80/129,872,521.80 = 84,230,218.80/x - Step 3: Cross multiply
86,749,642.80x = 129,872,521.80 × 84,230,218.80 - Step 4: Simplify right side
86,749,642.80x = 10,939,190,927,321,770 - Step 5: Solve for x
x = 10,939,190,927,321,770/86,749,642.80 - Step 6: Final answer
x = 126,100,702.83
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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.