Finding the Fourth Proportional to 99,652.80, 137,515.68 and 61,926.24
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Solution
The fourth proportional to 99,652.80, 137,515.68 and 61,926.24 is: 85,454.99
Step by Step Solution
- Step 1: Write the proportion equation
99,652.80 : 137,515.68 = 61,926.24 : x - Step 2: Convert to fraction form
99,652.80/137,515.68 = 61,926.24/x - Step 3: Cross multiply
99,652.80x = 137,515.68 × 61,926.24 - Step 4: Simplify right side
99,652.80x = 8,515,829,003.44 - Step 5: Solve for x
x = 8,515,829,003.44/99,652.80 - Step 6: Final answer
x = 85,454.99
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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.