Finding the Fourth Proportional to 56,925,825.87, 78,556,701.92 and 30,820,134.99
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Solution
The fourth proportional to 56,925,825.87, 78,556,701.92 and 30,820,134.99 is: 42,531,278.56
Step by Step Solution
- Step 1: Write the proportion equation
56,925,825.87 : 78,556,701.92 = 30,820,134.99 : x - Step 2: Convert to fraction form
56,925,825.87/78,556,701.92 = 30,820,134.99/x - Step 3: Cross multiply
56,925,825.87x = 78,556,701.92 × 30,820,134.99 - Step 4: Simplify right side
56,925,825.87x = 2,421,128,157,389,491.50 - Step 5: Solve for x
x = 2,421,128,157,389,491.50/56,925,825.87 - Step 6: Final answer
x = 42,531,278.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.