Finding the Fourth Proportional to 39,302,188.20, 58,961,576.70 and 12,378,565.80
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Solution
The fourth proportional to 39,302,188.20, 58,961,576.70 and 12,378,565.80 is: 18,570,461.09
Step by Step Solution
- Step 1: Write the proportion equation
39,302,188.20 : 58,961,576.70 = 12,378,565.80 : x - Step 2: Convert to fraction form
39,302,188.20/58,961,576.70 = 12,378,565.80/x - Step 3: Cross multiply
39,302,188.20x = 58,961,576.70 × 12,378,565.80 - Step 4: Simplify right side
39,302,188.20x = 729,859,756,852,697 - Step 5: Solve for x
x = 729,859,756,852,697/39,302,188.20 - Step 6: Final answer
x = 18,570,461.09
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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.