Finding the Fourth Proportional to 38,428,251.09, 53,031,752.12 and 21,024,969.99
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Solution
The fourth proportional to 38,428,251.09, 53,031,752.12 and 21,024,969.99 is: 29,014,877.47
Step by Step Solution
- Step 1: Write the proportion equation
38,428,251.09 : 53,031,752.12 = 21,024,969.99 : x - Step 2: Convert to fraction form
38,428,251.09/53,031,752.12 = 21,024,969.99/x - Step 3: Cross multiply
38,428,251.09x = 53,031,752.12 × 21,024,969.99 - Step 4: Simplify right side
38,428,251.09x = 1,114,990,996,734,994 - Step 5: Solve for x
x = 1,114,990,996,734,994/38,428,251.09 - Step 6: Final answer
x = 29,014,877.47
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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.