Finding the Fourth Proportional to 76,664,625.80, 114,996,938.70 and 47,966,811.80
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Solution
The fourth proportional to 76,664,625.80, 114,996,938.70 and 47,966,811.80 is: 71,950,217.70
Step by Step Solution
- Step 1: Write the proportion equation
76,664,625.80 : 114,996,938.70 = 47,966,811.80 : x - Step 2: Convert to fraction form
76,664,625.80/114,996,938.70 = 47,966,811.80/x - Step 3: Cross multiply
76,664,625.80x = 114,996,938.70 × 47,966,811.80 - Step 4: Simplify right side
76,664,625.80x = 5,516,036,516,199,036 - Step 5: Solve for x
x = 5,516,036,516,199,036/76,664,625.80 - Step 6: Final answer
x = 71,950,217.70
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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.