Finding the Fourth Proportional to 99,720.02, 149,644.84 and 53,005.70
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Solution
The fourth proportional to 99,720.02, 149,644.84 and 53,005.70 is: 79,543.00
Step by Step Solution
- Step 1: Write the proportion equation
99,720.02 : 149,644.84 = 53,005.70 : x - Step 2: Convert to fraction form
99,720.02/149,644.84 = 53,005.70/x - Step 3: Cross multiply
99,720.02x = 149,644.84 × 53,005.70 - Step 4: Simplify right side
99,720.02x = 7,932,029,495.59 - Step 5: Solve for x
x = 7,932,029,495.59/99,720.02 - Step 6: Final answer
x = 79,543.00
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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.