Finding the Fourth Proportional to 83,403,007.80, 125,104,511.70 and 68,947,812.60
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Solution
The fourth proportional to 83,403,007.80, 125,104,511.70 and 68,947,812.60 is: 103,421,718.90
Step by Step Solution
- Step 1: Write the proportion equation
83,403,007.80 : 125,104,511.70 = 68,947,812.60 : x - Step 2: Convert to fraction form
83,403,007.80/125,104,511.70 = 68,947,812.60/x - Step 3: Cross multiply
83,403,007.80x = 125,104,511.70 × 68,947,812.60 - Step 4: Simplify right side
83,403,007.80x = 8,625,682,428,106,107 - Step 5: Solve for x
x = 8,625,682,428,106,107/83,403,007.80 - Step 6: Final answer
x = 103,421,718.90
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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.