Finding the Fourth Proportional to 85,984,331.40, 128,976,497.10 and 51,972,107.40
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Solution
The fourth proportional to 85,984,331.40, 128,976,497.10 and 51,972,107.40 is: 77,958,161.10
Step by Step Solution
- Step 1: Write the proportion equation
85,984,331.40 : 128,976,497.10 = 51,972,107.40 : x - Step 2: Convert to fraction form
85,984,331.40/128,976,497.10 = 51,972,107.40/x - Step 3: Cross multiply
85,984,331.40x = 128,976,497.10 × 51,972,107.40 - Step 4: Simplify right side
85,984,331.40x = 6,703,180,359,356,988 - Step 5: Solve for x
x = 6,703,180,359,356,988/85,984,331.40 - Step 6: Final answer
x = 77,958,161.10
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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.