Finding the Fourth Proportional to 73,868,129.80, 110,802,194.70 and 67,915,990.60
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Solution
The fourth proportional to 73,868,129.80, 110,802,194.70 and 67,915,990.60 is: 101,873,985.90
Step by Step Solution
- Step 1: Write the proportion equation
73,868,129.80 : 110,802,194.70 = 67,915,990.60 : x - Step 2: Convert to fraction form
73,868,129.80/110,802,194.70 = 67,915,990.60/x - Step 3: Cross multiply
73,868,129.80x = 110,802,194.70 × 67,915,990.60 - Step 4: Simplify right side
73,868,129.80x = 7,525,240,813,704,569 - Step 5: Solve for x
x = 7,525,240,813,704,569/73,868,129.80 - Step 6: Final answer
x = 101,873,985.90
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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.