Finding the Fourth Proportional to 87,867,990.88, 121,257,824.79 and 48,709,668.40
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Solution
The fourth proportional to 87,867,990.88, 121,257,824.79 and 48,709,668.40 is: 67,219,340.94
Step by Step Solution
- Step 1: Write the proportion equation
87,867,990.88 : 121,257,824.79 = 48,709,668.40 : x - Step 2: Convert to fraction form
87,867,990.88/121,257,824.79 = 48,709,668.40/x - Step 3: Cross multiply
87,867,990.88x = 121,257,824.79 × 48,709,668.40 - Step 4: Simplify right side
87,867,990.88x = 5,906,428,436,426,200 - Step 5: Solve for x
x = 5,906,428,436,426,200/87,867,990.88 - Step 6: Final answer
x = 67,219,340.94
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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.