Finding the Fourth Proportional to 86,305,571.12, 129,509,432.34 and 31,756,463.60
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Solution
The fourth proportional to 86,305,571.12, 129,509,432.34 and 31,756,463.60 is: 47,653,488.88
Step by Step Solution
- Step 1: Write the proportion equation
86,305,571.12 : 129,509,432.34 = 31,756,463.60 : x - Step 2: Convert to fraction form
86,305,571.12/129,509,432.34 = 31,756,463.60/x - Step 3: Cross multiply
86,305,571.12x = 129,509,432.34 × 31,756,463.60 - Step 4: Simplify right side
86,305,571.12x = 4,112,761,573,314,325.50 - Step 5: Solve for x
x = 4,112,761,573,314,325.50/86,305,571.12 - Step 6: Final answer
x = 47,653,488.88
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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.