Finding the Fourth Proportional to 58,149,128.40, 87,129,214.20 and 48,512,331.60
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Solution
The fourth proportional to 58,149,128.40, 87,129,214.20 and 48,512,331.60 is: 72,689,676.49
Step by Step Solution
- Step 1: Write the proportion equation
58,149,128.40 : 87,129,214.20 = 48,512,331.60 : x - Step 2: Convert to fraction form
58,149,128.40/87,129,214.20 = 48,512,331.60/x - Step 3: Cross multiply
58,149,128.40x = 87,129,214.20 × 48,512,331.60 - Step 4: Simplify right side
58,149,128.40x = 4,226,841,331,317,829 - Step 5: Solve for x
x = 4,226,841,331,317,829/58,149,128.40 - Step 6: Final answer
x = 72,689,676.49
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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.