Finding the Fourth Proportional to 39,974,709.18, 55,165,274.72 and 21,639,994.68
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Solution
The fourth proportional to 39,974,709.18, 55,165,274.72 and 21,639,994.68 is: 29,863,287.96
Step by Step Solution
- Step 1: Write the proportion equation
39,974,709.18 : 55,165,274.72 = 21,639,994.68 : x - Step 2: Convert to fraction form
39,974,709.18/55,165,274.72 = 21,639,994.68/x - Step 3: Cross multiply
39,974,709.18x = 55,165,274.72 × 21,639,994.68 - Step 4: Simplify right side
39,974,709.18x = 1,193,776,251,077,512.25 - Step 5: Solve for x
x = 1,193,776,251,077,512.25/39,974,709.18 - Step 6: Final answer
x = 29,863,287.96
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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.