Finding the Fourth Proportional to 91,315.99, 126,015.76 and 51,029.75
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Solution
The fourth proportional to 91,315.99, 126,015.76 and 51,029.75 is: 70,420.88
Step by Step Solution
- Step 1: Write the proportion equation
91,315.99 : 126,015.76 = 51,029.75 : x - Step 2: Convert to fraction form
91,315.99/126,015.76 = 51,029.75/x - Step 3: Cross multiply
91,315.99x = 126,015.76 × 51,029.75 - Step 4: Simplify right side
91,315.99x = 6,430,552,728.86 - Step 5: Solve for x
x = 6,430,552,728.86/91,315.99 - Step 6: Final answer
x = 70,420.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.