Finding the Fourth Proportional to 74,187.15, 102,413.75 and 42,349.90
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Solution
The fourth proportional to 74,187.15, 102,413.75 and 42,349.90 is: 58,463.12
Step by Step Solution
- Step 1: Write the proportion equation
74,187.15 : 102,413.75 = 42,349.90 : x - Step 2: Convert to fraction form
74,187.15/102,413.75 = 42,349.90/x - Step 3: Cross multiply
74,187.15x = 102,413.75 × 42,349.90 - Step 4: Simplify right side
74,187.15x = 4,337,212,071.13 - Step 5: Solve for x
x = 4,337,212,071.13/74,187.15 - Step 6: Final answer
x = 58,463.12
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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.