Finding the Fourth Proportional to 66,142,276.64, 91,246,883.84 and 38,628,067.04
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Solution
The fourth proportional to 66,142,276.64, 91,246,883.84 and 38,628,067.04 is: 53,289,528.65
Step by Step Solution
- Step 1: Write the proportion equation
66,142,276.64 : 91,246,883.84 = 38,628,067.04 : x - Step 2: Convert to fraction form
66,142,276.64/91,246,883.84 = 38,628,067.04/x - Step 3: Cross multiply
66,142,276.64x = 91,246,883.84 × 38,628,067.04 - Step 4: Simplify right side
66,142,276.64x = 3,524,690,746,162,612.50 - Step 5: Solve for x
x = 3,524,690,746,162,612.50/66,142,276.64 - Step 6: Final answer
x = 53,289,528.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.