Finding the Fourth Proportional to 68,990,943.80, 103,486,415.70 and 65,631,711.80
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Solution
The fourth proportional to 68,990,943.80, 103,486,415.70 and 65,631,711.80 is: 98,447,567.70
Step by Step Solution
- Step 1: Write the proportion equation
68,990,943.80 : 103,486,415.70 = 65,631,711.80 : x - Step 2: Convert to fraction form
68,990,943.80/103,486,415.70 = 65,631,711.80/x - Step 3: Cross multiply
68,990,943.80x = 103,486,415.70 × 65,631,711.80 - Step 4: Simplify right side
68,990,943.80x = 6,791,990,610,437,395 - Step 5: Solve for x
x = 6,791,990,610,437,395/68,990,943.80 - Step 6: Final answer
x = 98,447,567.70
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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.