Finding the Fourth Proportional to 128,317,716.32, 192,399,708.17 and 40,841,447.81
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Solution
The fourth proportional to 128,317,716.32, 192,399,708.17 and 40,841,447.81 is: 61,237,706.41
Step by Step Solution
- Step 1: Write the proportion equation
128,317,716.32 : 192,399,708.17 = 40,841,447.81 : x - Step 2: Convert to fraction form
128,317,716.32/192,399,708.17 = 40,841,447.81/x - Step 3: Cross multiply
128,317,716.32x = 192,399,708.17 × 40,841,447.81 - Step 4: Simplify right side
128,317,716.32x = 7,857,882,639,024,391 - Step 5: Solve for x
x = 7,857,882,639,024,391/128,317,716.32 - Step 6: Final answer
x = 61,237,706.41
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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.