Finding the Fourth Proportional to 78,456,724.97, 108,225,195.19 and 49,037,000.09
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Solution
The fourth proportional to 78,456,724.97, 108,225,195.19 and 49,037,000.09 is: 67,642,880.94
Step by Step Solution
- Step 1: Write the proportion equation
78,456,724.97 : 108,225,195.19 = 49,037,000.09 : x - Step 2: Convert to fraction form
78,456,724.97/108,225,195.19 = 49,037,000.09/x - Step 3: Cross multiply
78,456,724.97x = 108,225,195.19 × 49,037,000.09 - Step 4: Simplify right side
78,456,724.97x = 5,307,038,905,608,579 - Step 5: Solve for x
x = 5,307,038,905,608,579/78,456,724.97 - Step 6: Final answer
x = 67,642,880.94
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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.