Finding the Fourth Proportional to 85,826,882.40, 128,628,349.20 and 39,763,413.60
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Solution
The fourth proportional to 85,826,882.40, 128,628,349.20 and 39,763,413.60 is: 59,593,242.90
Step by Step Solution
- Step 1: Write the proportion equation
85,826,882.40 : 128,628,349.20 = 39,763,413.60 : x - Step 2: Convert to fraction form
85,826,882.40/128,628,349.20 = 39,763,413.60/x - Step 3: Cross multiply
85,826,882.40x = 128,628,349.20 × 39,763,413.60 - Step 4: Simplify right side
85,826,882.40x = 5,114,702,249,924,829 - Step 5: Solve for x
x = 5,114,702,249,924,829/85,826,882.40 - Step 6: Final answer
x = 59,593,242.90
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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.