Finding the Fourth Proportional to 76,801,890.20, 115,202,946.15 and 31,363,684.70
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Solution
The fourth proportional to 76,801,890.20, 115,202,946.15 and 31,363,684.70 is: 47,045,572.32
Step by Step Solution
- Step 1: Write the proportion equation
76,801,890.20 : 115,202,946.15 = 31,363,684.70 : x - Step 2: Convert to fraction form
76,801,890.20/115,202,946.15 = 31,363,684.70/x - Step 3: Cross multiply
76,801,890.20x = 115,202,946.15 × 31,363,684.70 - Step 4: Simplify right side
76,801,890.20x = 3,613,188,879,559,679 - Step 5: Solve for x
x = 3,613,188,879,559,679/76,801,890.20 - Step 6: Final answer
x = 47,045,572.32
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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.