Finding the Fourth Proportional to 67,991,571.80, 101,987,357.70 and 54,554,643.80
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Solution
The fourth proportional to 67,991,571.80, 101,987,357.70 and 54,554,643.80 is: 81,831,965.70
Step by Step Solution
- Step 1: Write the proportion equation
67,991,571.80 : 101,987,357.70 = 54,554,643.80 : x - Step 2: Convert to fraction form
67,991,571.80/101,987,357.70 = 54,554,643.80/x - Step 3: Cross multiply
67,991,571.80x = 101,987,357.70 × 54,554,643.80 - Step 4: Simplify right side
67,991,571.80x = 5,563,883,971,426,687 - Step 5: Solve for x
x = 5,563,883,971,426,687/67,991,571.80 - Step 6: Final answer
x = 81,831,965.70
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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.