Finding the Fourth Proportional to 42,639,441.12, 63,987,505.26 and 19,922,109.84
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Solution
The fourth proportional to 42,639,441.12, 63,987,505.26 and 19,922,109.84 is: 29,896,407.52
Step by Step Solution
- Step 1: Write the proportion equation
42,639,441.12 : 63,987,505.26 = 19,922,109.84 : x - Step 2: Convert to fraction form
42,639,441.12/63,987,505.26 = 19,922,109.84/x - Step 3: Cross multiply
42,639,441.12x = 63,987,505.26 × 19,922,109.84 - Step 4: Simplify right side
42,639,441.12x = 1,274,766,108,177,297.75 - Step 5: Solve for x
x = 1,274,766,108,177,297.75/42,639,441.12 - Step 6: Final answer
x = 29,896,407.52
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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.