Finding the Fourth Proportional to 78,703,403.20, 118,055,104.80 and 40,439,651.20
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Solution
The fourth proportional to 78,703,403.20, 118,055,104.80 and 40,439,651.20 is: 60,659,476.80
Step by Step Solution
- Step 1: Write the proportion equation
78,703,403.20 : 118,055,104.80 = 40,439,651.20 : x - Step 2: Convert to fraction form
78,703,403.20/118,055,104.80 = 40,439,651.20/x - Step 3: Cross multiply
78,703,403.20x = 118,055,104.80 × 40,439,651.20 - Step 4: Simplify right side
78,703,403.20x = 4,774,107,260,491,446 - Step 5: Solve for x
x = 4,774,107,260,491,446/78,703,403.20 - Step 6: Final answer
x = 60,659,476.80
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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.