Finding the Fourth Proportional to 75,341,131.20, 113,011,696.80 and 72,471,349.80
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Solution
The fourth proportional to 75,341,131.20, 113,011,696.80 and 72,471,349.80 is: 108,707,024.70
Step by Step Solution
- Step 1: Write the proportion equation
75,341,131.20 : 113,011,696.80 = 72,471,349.80 : x - Step 2: Convert to fraction form
75,341,131.20/113,011,696.80 = 72,471,349.80/x - Step 3: Cross multiply
75,341,131.20x = 113,011,696.80 × 72,471,349.80 - Step 4: Simplify right side
75,341,131.20x = 8,190,110,210,284,340 - Step 5: Solve for x
x = 8,190,110,210,284,340/75,341,131.20 - Step 6: Final answer
x = 108,707,024.70
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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.