Finding the Fourth Proportional to 81,307.99, 121,961.30 and 63,553.58
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Solution
The fourth proportional to 81,307.99, 121,961.30 and 63,553.58 is: 95,329.83
Step by Step Solution
- Step 1: Write the proportion equation
81,307.99 : 121,961.30 = 63,553.58 : x - Step 2: Convert to fraction form
81,307.99/121,961.30 = 63,553.58/x - Step 3: Cross multiply
81,307.99x = 121,961.30 × 63,553.58 - Step 4: Simplify right side
81,307.99x = 7,751,076,766.23 - Step 5: Solve for x
x = 7,751,076,766.23/81,307.99 - Step 6: Final answer
x = 95,329.83
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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.