Finding the Fourth Proportional to 77,925,861.21, 107,530,363.38 and 52,756,769.31
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Solution
The fourth proportional to 77,925,861.21, 107,530,363.38 and 52,756,769.31 is: 72,799,382.48
Step by Step Solution
- Step 1: Write the proportion equation
77,925,861.21 : 107,530,363.38 = 52,756,769.31 : x - Step 2: Convert to fraction form
77,925,861.21/107,530,363.38 = 52,756,769.31/x - Step 3: Cross multiply
77,925,861.21x = 107,530,363.38 × 52,756,769.31 - Step 4: Simplify right side
77,925,861.21x = 5,672,954,574,915,805 - Step 5: Solve for x
x = 5,672,954,574,915,805/77,925,861.21 - Step 6: Final answer
x = 72,799,382.48
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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.