Finding the Fourth Proportional to 7,135,879.12, 9,847,518.34 and 3,872,693.02
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Solution
The fourth proportional to 7,135,879.12, 9,847,518.34 and 3,872,693.02 is: 5,344,319.16
Step by Step Solution
- Step 1: Write the proportion equation
7,135,879.12 : 9,847,518.34 = 3,872,693.02 : x - Step 2: Convert to fraction form
7,135,879.12/9,847,518.34 = 3,872,693.02/x - Step 3: Cross multiply
7,135,879.12x = 9,847,518.34 × 3,872,693.02 - Step 4: Simplify right side
7,135,879.12x = 38,136,415,539,639.98 - Step 5: Solve for x
x = 38,136,415,539,639.98/7,135,879.12 - Step 6: Final answer
x = 5,344,319.16
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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.