Finding the Fourth Proportional to 39,928,578.60, 55,103,990.94 and 22,518,571.80
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Solution
The fourth proportional to 39,928,578.60, 55,103,990.94 and 22,518,571.80 is: 31,077,068.60
Step by Step Solution
- Step 1: Write the proportion equation
39,928,578.60 : 55,103,990.94 = 22,518,571.80 : x - Step 2: Convert to fraction form
39,928,578.60/55,103,990.94 = 22,518,571.80/x - Step 3: Cross multiply
39,928,578.60x = 55,103,990.94 × 22,518,571.80 - Step 4: Simplify right side
39,928,578.60x = 1,240,863,176,448,939.50 - Step 5: Solve for x
x = 1,240,863,176,448,939.50/39,928,578.60 - Step 6: Final answer
x = 31,077,068.60
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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.