Finding the Fourth Proportional to 79,085.77, 118,619.88 and 19,921.44
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Solution
The fourth proportional to 79,085.77, 118,619.88 and 19,921.44 is: 29,879.95
Step by Step Solution
- Step 1: Write the proportion equation
79,085.77 : 118,619.88 = 19,921.44 : x - Step 2: Convert to fraction form
79,085.77/118,619.88 = 19,921.44/x - Step 3: Cross multiply
79,085.77x = 118,619.88 × 19,921.44 - Step 4: Simplify right side
79,085.77x = 2,363,078,822.23 - Step 5: Solve for x
x = 2,363,078,822.23/79,085.77 - Step 6: Final answer
x = 29,879.95
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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.