Finding the Fourth Proportional to 76,801,885.20, 115,202,938.65 and 31,363,679.70
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Solution
The fourth proportional to 76,801,885.20, 115,202,938.65 and 31,363,679.70 is: 47,045,564.82
Step by Step Solution
- Step 1: Write the proportion equation
76,801,885.20 : 115,202,938.65 = 31,363,679.70 : x - Step 2: Convert to fraction form
76,801,885.20/115,202,938.65 = 31,363,679.70/x - Step 3: Cross multiply
76,801,885.20x = 115,202,938.65 × 31,363,679.70 - Step 4: Simplify right side
76,801,885.20x = 3,613,188,068,317,350.50 - Step 5: Solve for x
x = 3,613,188,068,317,350.50/76,801,885.20 - Step 6: Final answer
x = 47,045,564.82
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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.