Finding the Fourth Proportional to 77,021.87, 115,542.55 and 26,430.75
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Solution
The fourth proportional to 77,021.87, 115,542.55 and 26,430.75 is: 39,649.47
Step by Step Solution
- Step 1: Write the proportion equation
77,021.87 : 115,542.55 = 26,430.75 : x - Step 2: Convert to fraction form
77,021.87/115,542.55 = 26,430.75/x - Step 3: Cross multiply
77,021.87x = 115,542.55 × 26,430.75 - Step 4: Simplify right side
77,021.87x = 3,053,876,253.41 - Step 5: Solve for x
x = 3,053,876,253.41/77,021.87 - Step 6: Final answer
x = 39,649.47
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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.