Finding the Fourth Proportional to 80,868,057.80, 121,302,086.70 and 55,358,889.80
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Solution
The fourth proportional to 80,868,057.80, 121,302,086.70 and 55,358,889.80 is: 83,038,334.70
Step by Step Solution
- Step 1: Write the proportion equation
80,868,057.80 : 121,302,086.70 = 55,358,889.80 : x - Step 2: Convert to fraction form
80,868,057.80/121,302,086.70 = 55,358,889.80/x - Step 3: Cross multiply
80,868,057.80x = 121,302,086.70 × 55,358,889.80 - Step 4: Simplify right side
80,868,057.80x = 6,715,148,850,135,345 - Step 5: Solve for x
x = 6,715,148,850,135,345/80,868,057.80 - Step 6: Final answer
x = 83,038,334.70
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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.