Finding the Fourth Proportional to 57,965,987.80, 86,948,981.70 and 55,131,635.80
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Solution
The fourth proportional to 57,965,987.80, 86,948,981.70 and 55,131,635.80 is: 82,697,453.70
Step by Step Solution
- Step 1: Write the proportion equation
57,965,987.80 : 86,948,981.70 = 55,131,635.80 : x - Step 2: Convert to fraction form
57,965,987.80/86,948,981.70 = 55,131,635.80/x - Step 3: Cross multiply
57,965,987.80x = 86,948,981.70 × 55,131,635.80 - Step 4: Simplify right side
57,965,987.80x = 4,793,639,592,265,265 - Step 5: Solve for x
x = 4,793,639,592,265,265/57,965,987.80 - Step 6: Final answer
x = 82,697,453.70
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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.