Finding the Fourth Proportional to 86,608,332.75, 129,912,666.36 and 21,029,194.05
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Solution
The fourth proportional to 86,608,332.75, 129,912,666.36 and 21,029,194.05 is: 31,543,831.68
Step by Step Solution
- Step 1: Write the proportion equation
86,608,332.75 : 129,912,666.36 = 21,029,194.05 : x - Step 2: Convert to fraction form
86,608,332.75/129,912,666.36 = 21,029,194.05/x - Step 3: Cross multiply
86,608,332.75x = 129,912,666.36 × 21,029,194.05 - Step 4: Simplify right side
86,608,332.75x = 2,731,958,670,437,347 - Step 5: Solve for x
x = 2,731,958,670,437,347/86,608,332.75 - Step 6: Final answer
x = 31,543,831.68
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1.5x scale
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.