Finding the Fourth Proportional to 99,430.13, 137,213.60 and 54,718.13
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Solution
The fourth proportional to 99,430.13, 137,213.60 and 54,718.13 is: 75,511.02
Step by Step Solution
- Step 1: Write the proportion equation
99,430.13 : 137,213.60 = 54,718.13 : x - Step 2: Convert to fraction form
99,430.13/137,213.60 = 54,718.13/x - Step 3: Cross multiply
99,430.13x = 137,213.60 × 54,718.13 - Step 4: Simplify right side
99,430.13x = 7,508,070,642.91 - Step 5: Solve for x
x = 7,508,070,642.91/99,430.13 - Step 6: Final answer
x = 75,511.02
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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.