Finding the Fourth Proportional to 78,417,919.80, 117,626,879.70 and 46,085,311.80
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Solution
The fourth proportional to 78,417,919.80, 117,626,879.70 and 46,085,311.80 is: 69,127,967.70
Step by Step Solution
- Step 1: Write the proportion equation
78,417,919.80 : 117,626,879.70 = 46,085,311.80 : x - Step 2: Convert to fraction form
78,417,919.80/117,626,879.70 = 46,085,311.80/x - Step 3: Cross multiply
78,417,919.80x = 117,626,879.70 × 46,085,311.80 - Step 4: Simplify right side
78,417,919.80x = 5,420,871,427,035,590 - Step 5: Solve for x
x = 5,420,871,427,035,590/78,417,919.80 - Step 6: Final answer
x = 69,127,967.70
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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.