Finding the Fourth Proportional to 90,408.90, 135,533.46 and 34,209.99
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Solution
The fourth proportional to 90,408.90, 135,533.46 and 34,209.99 is: 51,284.76
Step by Step Solution
- Step 1: Write the proportion equation
90,408.90 : 135,533.46 = 34,209.99 : x - Step 2: Convert to fraction form
90,408.90/135,533.46 = 34,209.99/x - Step 3: Cross multiply
90,408.90x = 135,533.46 × 34,209.99 - Step 4: Simplify right side
90,408.90x = 4,636,598,311.27 - Step 5: Solve for x
x = 4,636,598,311.27/90,408.90 - Step 6: Final answer
x = 51,284.76
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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.