Finding the Fourth Proportional to 81,611,709.40, 122,258,131.80 and 49,167,236.36
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Solution
The fourth proportional to 81,611,709.40, 122,258,131.80 and 49,167,236.36 is: 73,654,804.04
Step by Step Solution
- Step 1: Write the proportion equation
81,611,709.40 : 122,258,131.80 = 49,167,236.36 : x - Step 2: Convert to fraction form
81,611,709.40/122,258,131.80 = 49,167,236.36/x - Step 3: Cross multiply
81,611,709.40x = 122,258,131.80 × 49,167,236.36 - Step 4: Simplify right side
81,611,709.40x = 6,011,094,463,142,632 - Step 5: Solve for x
x = 6,011,094,463,142,632/81,611,709.40 - Step 6: Final answer
x = 73,654,804.04
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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.