Finding the Fourth Proportional to 25,902,069.60, 38,863,990.80 and 13,920,808.80
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Solution
The fourth proportional to 25,902,069.60, 38,863,990.80 and 13,920,808.80 is: 20,887,063.99
Step by Step Solution
- Step 1: Write the proportion equation
25,902,069.60 : 38,863,990.80 = 13,920,808.80 : x - Step 2: Convert to fraction form
25,902,069.60/38,863,990.80 = 13,920,808.80/x - Step 3: Cross multiply
25,902,069.60x = 38,863,990.80 × 13,920,808.80 - Step 4: Simplify right side
25,902,069.60x = 541,018,185,131,759 - Step 5: Solve for x
x = 541,018,185,131,759/25,902,069.60 - Step 6: Final answer
x = 20,887,063.99
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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.