Finding the Fourth Proportional to 76,361,209.99, 105,431,190.70 and 71,482,581.61
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Solution
The fourth proportional to 76,361,209.99, 105,431,190.70 and 71,482,581.61 is: 98,695,315.26
Step by Step Solution
- Step 1: Write the proportion equation
76,361,209.99 : 105,431,190.70 = 71,482,581.61 : x - Step 2: Convert to fraction form
76,361,209.99/105,431,190.70 = 71,482,581.61/x - Step 3: Cross multiply
76,361,209.99x = 105,431,190.70 × 71,482,581.61 - Step 4: Simplify right side
76,361,209.99x = 7,536,493,693,542,875 - Step 5: Solve for x
x = 7,536,493,693,542,875/76,361,209.99 - Step 6: Final answer
x = 98,695,315.26
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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.