Finding the Fourth Proportional to 72,928.09, 100,631.68 and 40,654.79
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Solution
The fourth proportional to 72,928.09, 100,631.68 and 40,654.79 is: 56,098.55
Step by Step Solution
- Step 1: Write the proportion equation
72,928.09 : 100,631.68 = 40,654.79 : x - Step 2: Convert to fraction form
72,928.09/100,631.68 = 40,654.79/x - Step 3: Cross multiply
72,928.09x = 100,631.68 × 40,654.79 - Step 4: Simplify right side
72,928.09x = 4,091,159,817.75 - Step 5: Solve for x
x = 4,091,159,817.75/72,928.09 - Step 6: Final answer
x = 56,098.55
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.