Finding the Fourth Proportional to 72,153.21, 107,701.44 and 63,631.26
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Solution
The fourth proportional to 72,153.21, 107,701.44 and 63,631.26 is: 94,980.92
Step by Step Solution
- Step 1: Write the proportion equation
72,153.21 : 107,701.44 = 63,631.26 : x - Step 2: Convert to fraction form
72,153.21/107,701.44 = 63,631.26/x - Step 3: Cross multiply
72,153.21x = 107,701.44 × 63,631.26 - Step 4: Simplify right side
72,153.21x = 6,853,178,569.63 - Step 5: Solve for x
x = 6,853,178,569.63/72,153.21 - Step 6: Final answer
x = 94,980.92
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.