Finding the Fourth Proportional to 76,801,891.12, 115,202,947.55 and 31,363,685.62
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Solution
The fourth proportional to 76,801,891.12, 115,202,947.55 and 31,363,685.62 is: 47,045,573.71
Step by Step Solution
- Step 1: Write the proportion equation
76,801,891.12 : 115,202,947.55 = 31,363,685.62 : x - Step 2: Convert to fraction form
76,801,891.12/115,202,947.55 = 31,363,685.62/x - Step 3: Cross multiply
76,801,891.12x = 115,202,947.55 × 31,363,685.62 - Step 4: Simplify right side
76,801,891.12x = 3,613,189,029,455,549.50 - Step 5: Solve for x
x = 3,613,189,029,455,549.50/76,801,891.12 - Step 6: Final answer
x = 47,045,573.71
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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.