Finding the Fourth Proportional to 66,430,207.40, 99,645,311.10 and 40,788,069.80
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Solution
The fourth proportional to 66,430,207.40, 99,645,311.10 and 40,788,069.80 is: 61,182,104.70
Step by Step Solution
- Step 1: Write the proportion equation
66,430,207.40 : 99,645,311.10 = 40,788,069.80 : x - Step 2: Convert to fraction form
66,430,207.40/99,645,311.10 = 40,788,069.80/x - Step 3: Cross multiply
66,430,207.40x = 99,645,311.10 × 40,788,069.80 - Step 4: Simplify right side
66,430,207.40x = 4,064,339,904,389,514 - Step 5: Solve for x
x = 4,064,339,904,389,514/66,430,207.40 - Step 6: Final answer
x = 61,182,104.70
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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.