Finding the Fourth Proportional to 71,779,230.60, 107,668,845.90 and 66,236,497.80
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Solution
The fourth proportional to 71,779,230.60, 107,668,845.90 and 66,236,497.80 is: 99,354,746.70
Step by Step Solution
- Step 1: Write the proportion equation
71,779,230.60 : 107,668,845.90 = 66,236,497.80 : x - Step 2: Convert to fraction form
71,779,230.60/107,668,845.90 = 66,236,497.80/x - Step 3: Cross multiply
71,779,230.60x = 107,668,845.90 × 66,236,497.80 - Step 4: Simplify right side
71,779,230.60x = 7,131,607,274,583,889 - Step 5: Solve for x
x = 7,131,607,274,583,889/71,779,230.60 - Step 6: Final answer
x = 99,354,746.70
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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.