Finding the Fourth Proportional to 74,714,911.20, 112,072,366.80 and 71,845,129.80
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Solution
The fourth proportional to 74,714,911.20, 112,072,366.80 and 71,845,129.80 is: 107,767,694.70
Step by Step Solution
- Step 1: Write the proportion equation
74,714,911.20 : 112,072,366.80 = 71,845,129.80 : x - Step 2: Convert to fraction form
74,714,911.20/112,072,366.80 = 71,845,129.80/x - Step 3: Cross multiply
74,714,911.20x = 112,072,366.80 × 71,845,129.80 - Step 4: Simplify right side
74,714,911.20x = 8,051,853,739,739,210 - Step 5: Solve for x
x = 8,051,853,739,739,210/74,714,911.20 - Step 6: Final answer
x = 107,767,694.70
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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.