Finding the Fourth Proportional to 81,029.98, 121,544.97 and 21,865.65
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Solution
The fourth proportional to 81,029.98, 121,544.97 and 21,865.65 is: 32,798.48
Step by Step Solution
- Step 1: Write the proportion equation
81,029.98 : 121,544.97 = 21,865.65 : x - Step 2: Convert to fraction form
81,029.98/121,544.97 = 21,865.65/x - Step 3: Cross multiply
81,029.98x = 121,544.97 × 21,865.65 - Step 4: Simplify right side
81,029.98x = 2,657,659,773.28 - Step 5: Solve for x
x = 2,657,659,773.28/81,029.98 - Step 6: Final answer
x = 32,798.48
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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.