Finding the Fourth Proportional to 90,660,676.20, 135,991,014.30 and 76,630,633.80
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Solution
The fourth proportional to 90,660,676.20, 135,991,014.30 and 76,630,633.80 is: 114,945,950.70
Step by Step Solution
- Step 1: Write the proportion equation
90,660,676.20 : 135,991,014.30 = 76,630,633.80 : x - Step 2: Convert to fraction form
90,660,676.20/135,991,014.30 = 76,630,633.80/x - Step 3: Cross multiply
90,660,676.20x = 135,991,014.30 × 76,630,633.80 - Step 4: Simplify right side
90,660,676.20x = 10,421,077,616,913,864 - Step 5: Solve for x
x = 10,421,077,616,913,864/90,660,676.20 - Step 6: Final answer
x = 114,945,950.70
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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.