Finding the Fourth Proportional to 99,430.62, 137,214.84 and 54,108.96
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Solution
The fourth proportional to 99,430.62, 137,214.84 and 54,108.96 is: 74,670.68
Step by Step Solution
- Step 1: Write the proportion equation
99,430.62 : 137,214.84 = 54,108.96 : x - Step 2: Convert to fraction form
99,430.62/137,214.84 = 54,108.96/x - Step 3: Cross multiply
99,430.62x = 137,214.84 × 54,108.96 - Step 4: Simplify right side
99,430.62x = 7,424,552,288.97 - Step 5: Solve for x
x = 7,424,552,288.97/99,430.62 - Step 6: Final answer
x = 74,670.68
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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.