Finding the Fourth Proportional to 81,424,027.80, 122,136,041.70 and 57,190,318.20
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Solution
The fourth proportional to 81,424,027.80, 122,136,041.70 and 57,190,318.20 is: 85,785,477.30
Step by Step Solution
- Step 1: Write the proportion equation
81,424,027.80 : 122,136,041.70 = 57,190,318.20 : x - Step 2: Convert to fraction form
81,424,027.80/122,136,041.70 = 57,190,318.20/x - Step 3: Cross multiply
81,424,027.80x = 122,136,041.70 × 57,190,318.20 - Step 4: Simplify right side
81,424,027.80x = 6,984,999,088,511,469 - Step 5: Solve for x
x = 6,984,999,088,511,469/81,424,027.80 - Step 6: Final answer
x = 85,785,477.30
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1.5x scale
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.