Finding the Fourth Proportional to 99,248.82, 136,975.14 and 56,821.02
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Solution
The fourth proportional to 99,248.82, 136,975.14 and 56,821.02 is: 78,419.75
Step by Step Solution
- Step 1: Write the proportion equation
99,248.82 : 136,975.14 = 56,821.02 : x - Step 2: Convert to fraction form
99,248.82/136,975.14 = 56,821.02/x - Step 3: Cross multiply
99,248.82x = 136,975.14 × 56,821.02 - Step 4: Simplify right side
99,248.82x = 7,783,067,169.44 - Step 5: Solve for x
x = 7,783,067,169.44/99,248.82 - Step 6: Final answer
x = 78,419.75
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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.