Finding the Fourth Proportional to 67,408.08, 101,108.46 and 20,661.08
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Solution
The fourth proportional to 67,408.08, 101,108.46 and 20,661.08 is: 30,990.50
Step by Step Solution
- Step 1: Write the proportion equation
67,408.08 : 101,108.46 = 20,661.08 : x - Step 2: Convert to fraction form
67,408.08/101,108.46 = 20,661.08/x - Step 3: Cross multiply
67,408.08x = 101,108.46 × 20,661.08 - Step 4: Simplify right side
67,408.08x = 2,089,009,980.74 - Step 5: Solve for x
x = 2,089,009,980.74/67,408.08 - Step 6: Final answer
x = 30,990.50
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1.5x scale
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.