Finding the Fourth Proportional to 81,232,163.62, 121,846,672.95 and 19,821,722.02
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Solution
The fourth proportional to 81,232,163.62, 121,846,672.95 and 19,821,722.02 is: 29,732,199.32
Step by Step Solution
- Step 1: Write the proportion equation
81,232,163.62 : 121,846,672.95 = 19,821,722.02 : x - Step 2: Convert to fraction form
81,232,163.62/121,846,672.95 = 19,821,722.02/x - Step 3: Cross multiply
81,232,163.62x = 121,846,672.95 × 19,821,722.02 - Step 4: Simplify right side
81,232,163.62x = 2,415,210,880,276,753.50 - Step 5: Solve for x
x = 2,415,210,880,276,753.50/81,232,163.62 - Step 6: Final answer
x = 29,732,199.32
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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.