Finding the Fourth Proportional to 39,643,213.21, 54,708,007.32 and 22,239,931.99
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Solution
The fourth proportional to 39,643,213.21, 54,708,007.32 and 22,239,931.99 is: 30,691,315.45
Step by Step Solution
- Step 1: Write the proportion equation
39,643,213.21 : 54,708,007.32 = 22,239,931.99 : x - Step 2: Convert to fraction form
39,643,213.21/54,708,007.32 = 22,239,931.99/x - Step 3: Cross multiply
39,643,213.21x = 54,708,007.32 × 22,239,931.99 - Step 4: Simplify right side
39,643,213.21x = 1,216,702,362,105,222 - Step 5: Solve for x
x = 1,216,702,362,105,222/39,643,213.21 - Step 6: Final answer
x = 30,691,315.45
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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.