Finding the Fourth Proportional to 75,764,649.12, 104,583,648.80 and 49,660,849.20
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Solution
The fourth proportional to 75,764,649.12, 104,583,648.80 and 49,660,849.20 is: 68,550,608.66
Step by Step Solution
- Step 1: Write the proportion equation
75,764,649.12 : 104,583,648.80 = 49,660,849.20 : x - Step 2: Convert to fraction form
75,764,649.12/104,583,648.80 = 49,660,849.20/x - Step 3: Cross multiply
75,764,649.12x = 104,583,648.80 × 49,660,849.20 - Step 4: Simplify right side
75,764,649.12x = 5,193,712,811,842,561 - Step 5: Solve for x
x = 5,193,712,811,842,561/75,764,649.12 - Step 6: Final answer
x = 68,550,608.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.