Finding the Fourth Proportional to 82,716,619.80, 124,074,929.70 and 55,435,981.80
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Solution
The fourth proportional to 82,716,619.80, 124,074,929.70 and 55,435,981.80 is: 83,153,972.70
Step by Step Solution
- Step 1: Write the proportion equation
82,716,619.80 : 124,074,929.70 = 55,435,981.80 : x - Step 2: Convert to fraction form
82,716,619.80/124,074,929.70 = 55,435,981.80/x - Step 3: Cross multiply
82,716,619.80x = 124,074,929.70 × 55,435,981.80 - Step 4: Simplify right side
82,716,619.80x = 6,878,215,544,685,479 - Step 5: Solve for x
x = 6,878,215,544,685,479/82,716,619.80 - Step 6: Final answer
x = 83,153,972.70
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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.