Finding the Fourth Proportional to 83,106,276.80, 124,659,415.20 and 77,059,659.20
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Solution
The fourth proportional to 83,106,276.80, 124,659,415.20 and 77,059,659.20 is: 115,589,488.80
Step by Step Solution
- Step 1: Write the proportion equation
83,106,276.80 : 124,659,415.20 = 77,059,659.20 : x - Step 2: Convert to fraction form
83,106,276.80/124,659,415.20 = 77,059,659.20/x - Step 3: Cross multiply
83,106,276.80x = 124,659,415.20 × 77,059,659.20 - Step 4: Simplify right side
83,106,276.80x = 9,606,212,051,383,300 - Step 5: Solve for x
x = 9,606,212,051,383,300/83,106,276.80 - Step 6: Final answer
x = 115,589,488.80
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1.5x scale
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.