Finding the Fourth Proportional to 81,785,362.80, 122,573,845.80 and 43,465,234.80
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Solution
The fourth proportional to 81,785,362.80, 122,573,845.80 and 43,465,234.80 is: 65,142,475.45
Step by Step Solution
- Step 1: Write the proportion equation
81,785,362.80 : 122,573,845.80 = 43,465,234.80 : x - Step 2: Convert to fraction form
81,785,362.80/122,573,845.80 = 43,465,234.80/x - Step 3: Cross multiply
81,785,362.80x = 122,573,845.80 × 43,465,234.80 - Step 4: Simplify right side
81,785,362.80x = 5,327,700,988,035,993 - Step 5: Solve for x
x = 5,327,700,988,035,993/81,785,362.80 - Step 6: Final answer
x = 65,142,475.45
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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.