Finding the Fourth Proportional to 103,537.01, 142,528.47 and 76,628.81
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Solution
The fourth proportional to 103,537.01, 142,528.47 and 76,628.81 is: 105,486.79
Step by Step Solution
- Step 1: Write the proportion equation
103,537.01 : 142,528.47 = 76,628.81 : x - Step 2: Convert to fraction form
103,537.01/142,528.47 = 76,628.81/x - Step 3: Cross multiply
103,537.01x = 142,528.47 × 76,628.81 - Step 4: Simplify right side
103,537.01x = 10,921,787,047.22 - Step 5: Solve for x
x = 10,921,787,047.22/103,537.01 - Step 6: Final answer
x = 105,486.79
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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.