Finding the Fourth Proportional to 99,877.03, 137,829.38 and 54,554.99
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Solution
The fourth proportional to 99,877.03, 137,829.38 and 54,554.99 is: 75,285.38
Step by Step Solution
- Step 1: Write the proportion equation
99,877.03 : 137,829.38 = 54,554.99 : x - Step 2: Convert to fraction form
99,877.03/137,829.38 = 54,554.99/x - Step 3: Cross multiply
99,877.03x = 137,829.38 × 54,554.99 - Step 4: Simplify right side
99,877.03x = 7,519,280,447.61 - Step 5: Solve for x
x = 7,519,280,447.61/99,877.03 - Step 6: Final answer
x = 75,285.38
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.