Finding the Fourth Proportional to 98,448.96, 135,865.44 and 74,537.76
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Solution
The fourth proportional to 98,448.96, 135,865.44 and 74,537.76 is: 102,866.56
Step by Step Solution
- Step 1: Write the proportion equation
98,448.96 : 135,865.44 = 74,537.76 : x - Step 2: Convert to fraction form
98,448.96/135,865.44 = 74,537.76/x - Step 3: Cross multiply
98,448.96x = 135,865.44 × 74,537.76 - Step 4: Simplify right side
98,448.96x = 10,127,105,559.01 - Step 5: Solve for x
x = 10,127,105,559.01/98,448.96 - Step 6: Final answer
x = 102,866.56
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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.