Finding the Fourth Proportional to 70,958.84, 106,437.72 and 21,039.08
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Solution
The fourth proportional to 70,958.84, 106,437.72 and 21,039.08 is: 31,558.46
Step by Step Solution
- Step 1: Write the proportion equation
70,958.84 : 106,437.72 = 21,039.08 : x - Step 2: Convert to fraction form
70,958.84/106,437.72 = 21,039.08/x - Step 3: Cross multiply
70,958.84x = 106,437.72 × 21,039.08 - Step 4: Simplify right side
70,958.84x = 2,239,351,706.10 - Step 5: Solve for x
x = 2,239,351,706.10/70,958.84 - Step 6: Final answer
x = 31,558.46
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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.