Finding the Fourth Proportional to 70,998.05, 106,478.84 and 21,066.33
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Solution
The fourth proportional to 70,998.05, 106,478.84 and 21,066.33 is: 31,594.09
Step by Step Solution
- Step 1: Write the proportion equation
70,998.05 : 106,478.84 = 21,066.33 : x - Step 2: Convert to fraction form
70,998.05/106,478.84 = 21,066.33/x - Step 3: Cross multiply
70,998.05x = 106,478.84 × 21,066.33 - Step 4: Simplify right side
70,998.05x = 2,243,118,276.13 - Step 5: Solve for x
x = 2,243,118,276.13/70,998.05 - Step 6: Final answer
x = 31,594.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.