Finding the Fourth Proportional to 86,305,571.49, 129,509,432.90 and 31,756,463.98
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Solution
The fourth proportional to 86,305,571.49, 129,509,432.90 and 31,756,463.98 is: 47,653,489.45
Step by Step Solution
- Step 1: Write the proportion equation
86,305,571.49 : 129,509,432.90 = 31,756,463.98 : x - Step 2: Convert to fraction form
86,305,571.49/129,509,432.90 = 31,756,463.98/x - Step 3: Cross multiply
86,305,571.49x = 129,509,432.90 × 31,756,463.98 - Step 4: Simplify right side
86,305,571.49x = 4,112,761,640,714,694.50 - Step 5: Solve for x
x = 4,112,761,640,714,694.50/86,305,571.49 - Step 6: Final answer
x = 47,653,489.45
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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.