Finding the Fourth Proportional to 85,696.08, 128,570.37 and 38,351.02
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Solution
The fourth proportional to 85,696.08, 128,570.37 and 38,351.02 is: 57,538.28
Step by Step Solution
- Step 1: Write the proportion equation
85,696.08 : 128,570.37 = 38,351.02 : x - Step 2: Convert to fraction form
85,696.08/128,570.37 = 38,351.02/x - Step 3: Cross multiply
85,696.08x = 128,570.37 × 38,351.02 - Step 4: Simplify right side
85,696.08x = 4,930,804,831.28 - Step 5: Solve for x
x = 4,930,804,831.28/85,696.08 - Step 6: Final answer
x = 57,538.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.