Finding the Fourth Proportional to 84,349.12, 116,413.36 and 48,538.40
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Solution
The fourth proportional to 84,349.12, 116,413.36 and 48,538.40 is: 66,989.65
Step by Step Solution
- Step 1: Write the proportion equation
84,349.12 : 116,413.36 = 48,538.40 : x - Step 2: Convert to fraction form
84,349.12/116,413.36 = 48,538.40/x - Step 3: Cross multiply
84,349.12x = 116,413.36 × 48,538.40 - Step 4: Simplify right side
84,349.12x = 5,650,518,233.02 - Step 5: Solve for x
x = 5,650,518,233.02/84,349.12 - Step 6: Final answer
x = 66,989.65
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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.