Finding the Fourth Proportional to 31,348,919.68, 43,267,873.68 and 18,118,658.56
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Solution
The fourth proportional to 31,348,919.68, 43,267,873.68 and 18,118,658.56 is: 25,007,427.30
Step by Step Solution
- Step 1: Write the proportion equation
31,348,919.68 : 43,267,873.68 = 18,118,658.56 : x - Step 2: Convert to fraction form
31,348,919.68/43,267,873.68 = 18,118,658.56/x - Step 3: Cross multiply
31,348,919.68x = 43,267,873.68 × 18,118,658.56 - Step 4: Simplify right side
31,348,919.68x = 783,955,829,825,130.62 - Step 5: Solve for x
x = 783,955,829,825,130.62/31,348,919.68 - Step 6: Final answer
x = 25,007,427.30
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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.