Finding the Fourth Proportional to 86,245,718.40, 129,368,577.60 and 84,545,107.20
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Solution
The fourth proportional to 86,245,718.40, 129,368,577.60 and 84,545,107.20 is: 126,817,660.80
Step by Step Solution
- Step 1: Write the proportion equation
86,245,718.40 : 129,368,577.60 = 84,545,107.20 : x - Step 2: Convert to fraction form
86,245,718.40/129,368,577.60 = 84,545,107.20/x - Step 3: Cross multiply
86,245,718.40x = 129,368,577.60 × 84,545,107.20 - Step 4: Simplify right side
86,245,718.40x = 10,937,480,261,503,518 - Step 5: Solve for x
x = 10,937,480,261,503,518/86,245,718.40 - Step 6: Final answer
x = 126,817,660.80
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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.