Finding the Fourth Proportional to 39,929,458.68, 55,102,689.72 and 21,594,744.18
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Solution
The fourth proportional to 39,929,458.68, 55,102,689.72 and 21,594,744.18 is: 29,800,766.84
Step by Step Solution
- Step 1: Write the proportion equation
39,929,458.68 : 55,102,689.72 = 21,594,744.18 : x - Step 2: Convert to fraction form
39,929,458.68/55,102,689.72 = 21,594,744.18/x - Step 3: Cross multiply
39,929,458.68x = 55,102,689.72 × 21,594,744.18 - Step 4: Simplify right side
39,929,458.68x = 1,189,928,488,133,315.75 - Step 5: Solve for x
x = 1,189,928,488,133,315.75/39,929,458.68 - Step 6: Final answer
x = 29,800,766.84
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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.