Finding the Fourth Proportional to 77,272,413.20, 115,983,269.40 and 47,039,325.20
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Solution
The fourth proportional to 77,272,413.20, 115,983,269.40 and 47,039,325.20 is: 70,604,430.50
Step by Step Solution
- Step 1: Write the proportion equation
77,272,413.20 : 115,983,269.40 = 47,039,325.20 : x - Step 2: Convert to fraction form
77,272,413.20/115,983,269.40 = 47,039,325.20/x - Step 3: Cross multiply
77,272,413.20x = 115,983,269.40 × 47,039,325.20 - Step 4: Simplify right side
77,272,413.20x = 5,455,774,727,065,810 - Step 5: Solve for x
x = 5,455,774,727,065,810/77,272,413.20 - Step 6: Final answer
x = 70,604,430.50
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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.