Finding the Fourth Proportional to 86,608,332.75, 129,912,666.35 and 21,029,194.07
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Solution
The fourth proportional to 86,608,332.75, 129,912,666.35 and 21,029,194.07 is: 31,543,831.70
Step by Step Solution
- Step 1: Write the proportion equation
86,608,332.75 : 129,912,666.35 = 21,029,194.07 : x - Step 2: Convert to fraction form
86,608,332.75/129,912,666.35 = 21,029,194.07/x - Step 3: Cross multiply
86,608,332.75x = 129,912,666.35 × 21,029,194.07 - Step 4: Simplify right side
86,608,332.75x = 2,731,958,672,070,599.50 - Step 5: Solve for x
x = 2,731,958,672,070,599.50/86,608,332.75 - Step 6: Final answer
x = 31,543,831.70
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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.