Finding the Fourth Proportional to 31,687,125.12, 43,728,927.84 and 19,297,799.28
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Solution
The fourth proportional to 31,687,125.12, 43,728,927.84 and 19,297,799.28 is: 26,631,386.38
Step by Step Solution
- Step 1: Write the proportion equation
31,687,125.12 : 43,728,927.84 = 19,297,799.28 : x - Step 2: Convert to fraction form
31,687,125.12/43,728,927.84 = 19,297,799.28/x - Step 3: Cross multiply
31,687,125.12x = 43,728,927.84 × 19,297,799.28 - Step 4: Simplify right side
31,687,125.12x = 843,872,072,185,924.12 - Step 5: Solve for x
x = 843,872,072,185,924.12/31,687,125.12 - Step 6: Final answer
x = 26,631,386.38
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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.