Finding the Fourth Proportional to 99,663.08, 137,536.12 and 54,340.68
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Solution
The fourth proportional to 99,663.08, 137,536.12 and 54,340.68 is: 74,990.72
Step by Step Solution
- Step 1: Write the proportion equation
99,663.08 : 137,536.12 = 54,340.68 : x - Step 2: Convert to fraction form
99,663.08/137,536.12 = 54,340.68/x - Step 3: Cross multiply
99,663.08x = 137,536.12 × 54,340.68 - Step 4: Simplify right side
99,663.08x = 7,473,806,285.36 - Step 5: Solve for x
x = 7,473,806,285.36/99,663.08 - Step 6: Final answer
x = 74,990.72
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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.